Tag: Bluetooth

Articles

Hedy Lamarr: Five things you didn’t know about the actress and inventor in today’s Google doodle | The Independent

From the horse’s mouth

Google

Celebrating Hedy Lamarr (Blog post)

Video

My Comments

Google is celebrating Hedy Lamarr who was an Austrian film actress who moved to France then America where she gained her footing as one of Hollywood’s most beautiful film stars. They have done this using their animated “Google Doodles” which shows you the pathway from a film star to the home network.

But it wasn’t all about being the most beautiful woman in Europe or starring in these films that made her significant. When Hedy was with her first husband who was a German arms dealer, she had taken an interest in applied science which was part of what made military technology work.

After fleeing Germany, she also wanted to contribute to the Allied war effort during World War II in a more useful way than selling war bonds. She realised that Hitler was using his U-Boats to sink passenger liners and wanted to do something about that.

Hedy Lamarr worked with George Antheil, an avante-garde composer who was her neighbour in Hollywood, to invent a frequency-hopping system for radio communications. This was a tool to allow successful communications to take place without being at risk of radio jamming which the Germans were good at. 

The proof of concept was based around a player piano a.k.a. a pianola and its perforated rolls that had the music and taught the instrument how to play. Here, a piano roll was used to unpredictably change radio equipment between 88 different frequencies with the setup only operating on the frequencies for a short time. The sequence was only known between the controlling ship and the torpedo and it would require a lot of power in those days to jam a large swathe of frequencies. 

This was not implemented by US Navy until the early 1960s where it earnt its keep as part of a blockade of Cuba. But this technology and the spread-spectrum ability that it allowed for ended up as an integral part of today’s digital-radio communications techology. Examples of this include Bluetooth, CDMA used in some cordless phone and mobile phone applications and COFDM which is used in Wi-Fi wireless networking which nearly every home network runs with, DAB and digital satellite radio and DVB-T digital TV.

Here, it is about a film star who appeared through Hollywood’s Golden Era but also contributed to the features essential for mobile computing and home networking.

Article

There is an effort to see these in-room phones earn their keep further

How guestroom phones have become multipurpose tools | Hotel Management

My Comments

This article has highlighted how the phone in a hotel room has earnt its keep. Primarily, this was seen by a hotel or motel as a revenue-generating device because of the local, long-distance and international calls placed by guests. It is even though guests who wanted to save money used services that allowed calls to be charged against prepaid cards, one’s own telephone account or credit cards; or made a brief call and asked the respondent to call them at the hotel.

This was taken further with guests carrying their own smartphones where they (or their employer / business) picked up the tab for the calls, along with VoIP services of the Skype or Viber ilk that offered voice or video calls for free.

But these phones still earn their place in the hotel room. Commonly they are used to contact hotel services like Housekeeping, the Front Desk or the restaurant to facilitate dinner bookings or in-room dining. For some older people or those at risk of strokes, diabetic comas or seizures, the phone can be used as part of an “are-you-OK” arrangement, something that has been of benefit for me. This also leads to these phones serving as a “preferred emergency contact point” because of it relating to the room you are calling from.

Increasingly hotels are deploying smartphone apps to allow you to facilitate these services in a more “express” manner and these work alongside the apps that run on the in-room iPads. Young people do use these apps but the in-room phone still serves as a fallback if you need to ask further questions or convey further details. this fallback applies if your smartphone’s battery dies or you want to use it for another activity.

But the phone suppliers are realising now that these phones can do more than just be a telephone extension. Traditionally, they offered a phone that has a built-in AM/FM clock radio but they are taking it further by integrating USB charging ports for your gadgets and / or Bluetooth speakers for music playback and speakerphone functionality.

What can be done to improve on these phones?

One way to improve on them in the hotel context is to have a site-configured Bluetooth device identity that reflects the hotel name and your room number. This would make it easier to identify what you are pairing your smartphone to.

Similarly, there will be an expectation for increased synergy amongst all of the technology within a hotel room including the devices a guest brings along with them and this synergy will be primarily room-focused. For example, it could be desired to pair your smartphone to the hotel room’s phone then have your music that you have on your phone play through the TV’s speakers for better and louder sound.

To some extent, USB connectivity can also be about adding functionality to these phones such as serving as an audio device or USB hub for computing devices.

Conclusion

What really is happening is that although it becomes so easy to write off certain technology due to other technology supplanting it, such technology can still serve a complementary role. This is important if we look at the devices beyond what they current do and look at what they can do.

Taking control of local data-transfer functionality like AirDrop can help you avoid unwanted surprises

Article

Cyberflasher Airdrops rude images to victim’s iPhone | Naked Security (Sophos)

My Comments

A problem that has started to surface for Apple iOS users is the ability for someone to send gross images to strangers courtesy of the AirDrop feature that newer iterations of this platform have. Situations where this typically happened were when the offender and victim were on public transport or in public areas.

This feature makes it easy to share photos between iOS and MacOS X devices in a local area using Bluetooth and Wi-FI technologies and provides a thumbnail image of incoming photos rather than a dialog box asking if you want to receive the image.

This was feasible with Android and other open-frame mobile operating systems courtesy of Bluetooth Object Push Profile but these platforms. especially Android, hardened themselves against this by making your phone undiscoverable by default and providing a narrow time limit for having your phone discoverable by Bluetooth devices. As well, these platforms required your permission to start receiving the file and you didn’t see one bit of that file until you gave the go-ahead.

Android and Windows improved on this using a passcode that you and your correspondent exchange before a file is transferred and the NFC functionality that is part of recent Android versions requires you to physically touch the backs of the phones as part of instigating the data transfer.

The same situation may also crop up with Wi-Fi Aware as it implements Bluetooth local discovery for ad-hoc Wi-Fi networks created by mobile devices and will require users to be able to take control of what notifications and files they receive on their devices if this technology is for transferring files.

Protecting yourself

A good practice to observe is to turn off the AirDrop feature unless you make regular use of it. Or, at least, set AirDrop’s discoverability settings to “Off” or “Contacts Only” rather than “Everyone” so that every man and his dog can’t discover your phone. You would turn this function on if you are expecting a photo from someone not yet in your Contacts List.

In some situations, you may have to disable Wi-Fi and Bluetooth unless you are actually using these features such as linking to a hotspot or using a Bluetooth headset.

You may find that changing your device’s identity to your initials or something innocuous rather than your first name may work wonders in these situations.

I would also prefer that any local data transfer or similar activity between users takes place in a manner where each participant can see each other. This may be at the same table in a café, restaurant or library, the same seating cluster in a lounge area, the same row of seats in a public-transport vehicle or a similar area of close proximity. As well, such activity should be preceded by relevant conversation.

What must be preserved

If a setup allows for local data transfer between computer devices using a wireless medium, there must be a way of allowing the users to confirm their intent to transfer the data between each other. This means that the sender and receiver know whom the data is coming from and to and must occur before a single bit of the actual data changes hands.

This may be through the sender exchanging a simple passcode to the receiver or requiring the devices to physically be near each other at the start of the data transmission. The latter solution may be in the form of NFC where the users touch the backs of their devices together, or a QR code shown on the sending device’s screen that the receiving device has to scan before transmission takes place.

If a user wants to simplify this process, they could create a “trusted recipients” list which can be their Contacts list or a separately-created list. Personally, I would use all of the “friends” in a social network as this list because that tends to encompass too many people and an account can too easily be compromised.

The same thing must also apply to social networks, online gaming and similar services where one user may want to enrol another user in to their personal lists. This is more important if any of these services facilitate the transfer of files between users or support any form of instant messaging.

BBC Model B personal computer – the core of an original computer-education project that took place in the UK during the early 1980s

Article

BBC reveals Micro:bit, a programmable PC that fits in your pocket | PC World

Micro:bit : la BBC veut distribuer des nano ordinateurs aux enfants britanniques | ZDNet.fr (French language / Langue française)

From the horse’s mouth

BBC

Press Release

Microsoft

Press Release

TouchDevelop Website

Video

Bluetooth SIG

Blog Post

My Comments

In the early 1980s, the BBC undertook a computer-education project which was based around a series of television programmes along with a specially-commissioned computer. This computer, known as the BBC Model B computer and built by Acorn who were a relatively-new home-computer manufacturer in the UK, was sold to schools so that students can work along with the TV programmes which explored, amongst other things, coding in BASIC and interfacing and controlling other devices.

One feature that the BBC Model B had was an 8-bit user port which was used for directly interfacing digital circuits along with a “game port” typically used for analogue joysticks and knob-style “paddles” but serving as an analogue input. Some of the printed and visual courseware associated with this computer was dedicated to teaching how to use these “real-world” interfaces.

This system was Acorn’s main founding stone and Acorn evolved to become a company who sold RISC-based microprocessors and defined the ARM microarchitecture used in most of today’s smartphones, smart TVs and similar devices.

But Acorn had clawed back to their roots with an ARM-based pocket-sized board computer similar to the Arduino and Raspberry Pi. This computer has been developed in conjunction with the BBC in order to continue on the legacy left by the original BBC Model B computer.

It has 25 LEDs that can be programmed to light up and flash messages, 2 user-programmable buttons and sensors in the form of an accelerometer and compass along with input-output connections for users to connect to other circuits. It uses Bluetooth Smart (BLE) technology to interface with other devices including regular and mobile computer devices. As well, it can connect to a computing device via USB and be programmed via a browser-based software development kit called TouchDevelop which Microsoft worked on.

The TouchDevelop setup uses the Web-based interface along with a choice of programming languages as a way to program the device. It also involves two-stage compilation with the Block Editor script being compiled to turn out C++ code which is then subsequently compiled and linked to turn out machine code to be downloaded and flashed to the BBC Micro Bit.

Like the previous BBC Model B computer, this will be delivered in to UK secondary schools and students will have their own Micro Bit computer so they can learn how to program the Internet Of Everything as part of their computer education.

The goal is to have this computer replicate what the BBC Model B computer had done for British computer education and the success in bringing about a UK-based software industry. Here, they want to have Britain putting a clear foot in the door for Internet Of Things.

Article

Bluetooth beacon technology is relevant with rally racing and similar sports

From the horse’s mouth

Pikes Peak International Hill Climb

Press Release

My Comments

This year’s Pikes Peak International Hill Climb in Coloradio Springs, Colorado, USA has become an interesting race when it comes to enriching the spectator’s experience.

It has been facilitated by the use of Bluetooth Beacons or iBeacons along with an iOS 8+ iPhone app which provides detailed up-to-date information about the competitors and where the place during the race. This includes the ability for users to favourite a competitor and be notified when they hit the finish. The Bluetooth Beacon technology is pitched as being Internet-independent because there isn’t the need to have the vehicles equipped with GPS-capable devices and spectators’ smartphones can pick up these beacon signals easily.

.. like bike races of the Tour De France calibre

But I do see more potential for this in rallies, hill-climb races, road-based cycle races, marathons and similar point-to-point races. This is where competitors are required to race from one point to another and following a known route or series of waypoints. Here, spectators would typically be spread across the (typically long) course and would want to know when their favoured competitors are coming past them as well as knowing how they are placed in the competition.

The same technology can work with other computer systems to accurately determine who has won the race without requiring the use of proprietary transponder technology. As well, there isn’t a requirement for competitors to carry and use GPS devices that need continual mobile-broadband links for uploading real-time position data, something that would be difficult with events held in country areas where such service isn’t all that reliable. The other bonus is that the Bluetooth beacons are very lightweight which adds very little weight to the competitor or competing vehicle where any extra weight carried can slow the competitor down.

But the hillclimb allowed spectators with suitably-equipped mobile devices that supported beacon detection to detect these beacons themselves when it comes to when “their” competitors are near. As well, computing devices with Bluetooth Smart functionality and Wi-Fi / mobile-broadband Internet access can be located at key points in the course to report the competitors’ positions for real-time updates for broadcast and online use.

It does show that the idea of using the Bluetooth Beacon technology for tracking the competition in point-to-point races has been proven thus allowing for systems that are more affordable for providing real-time competition updates for the spectators. It could be that as you watch that car rally you could have you phone notify you when that rally legend is near and about to perform that 3-point turn in the WRX. Similarly, your phone would notify you as the Tour De France péléton is about to arrive in your street so you can flip open those shutters and windows on the front of your house to have a look as it comes past.

For it to work effectively, the Bluetooth Beacon technology needs to be able to work on the client side with iOS, Android and Windows platforms with the necessary client apps written to work on each of those platforms.

Article

Get Your Hipster On with Bluetooth Beanie | Bluetooth Blog

From the horse’s mouth

TRNDLabs

Bluetooth Beanie

Product Page

Video

My Comments

I was surprised to come across a beanie-style hat that doubles as a Bluetooth headset for your smartphone. The copy in the Bluetooth SIG article highlighted it as being part of the hipster’s image including being able to shift around that trendy inner-urban area like San Fran, Newtown or Fitzroy on a bicycle.

But what was interesting was how the headset was integrated in to something that would normally be knitted. Here, the Bluetooth receiver module had one of the speakers and the microphone along with a group of buttons as its control surface and was connected to a secondary speaker which served as the other speaker for the stereo headset. These were inserted in to pockets knitted in to the beanie so as to allow one to remove them when they wash the hat – avoiding any damage to the electronics while it is being soaked in water and Wool-mix.

This device, which can be charged by a USB charger, can run for six hours on talk / music activities and works according to Bluetooth 3.0 with Handsfree (communications) profile and A2DP / AVRCP (music playback) profiles. It has an operating range of around 10 metres (33 feet), effectively ticking the boxes for essential Bluetooth headset functionality.

It is an example of how one can design mobile electronics for integration into clothing and footwear but making sure you can remove it when you want to wash the clothing. The Bluetooth receiver and speaker could be offered as a separate “short-form” accessory for those of us making our own headgear to convey our own identity or for those of us making and selling such headgear.

Article

Porsche offers to put modern tech in the dash of your classic 911 | Engadget

From the horse’s mouth

Porsche

Press Release

My Comments

Those of you who are keeping that legendary Porsche 911 alive may want to have a multimedia system that has the best of both worlds – something that doesn’t look out of place in your sport’s car’s dashboard yet is able to work smoothly with your smartphone.

This may be the way to use your smartphone with your classic car’s stereo

This is rather than maintaining the Becker, Blaupunkt or Eurovox radio that came with the car and coupling your smartphone to a cassette adaptor or, worse still, an FM transmitter to have it work with the radio; using a Parrot multimedia smartphone adaptor installed between the existing radio and the speakers; or running a third-party head unit that may be considered by some to be out-of-place in the sports machine’s dashboard.

This radio is manufactured for Porsche Classic which is a division within Porsche that focuses on supporting the fleet of classic Porsche sports cars still on the road in that “stylish yet cool” manner. Activities include supplying original spare parts, technical literature and specially-refined motor oil for Porsches over 10 years old, and they even engage in restoration work to make these cars be young again.

The new radio that Porsche offers maintains the traditional car-radio look with two knobs flanking a control-panel “nose-piece” in the centre that typically had the dial and push-buttons for a radio and a tape slot and applicable transport controls radios that had a tape player. This layout was common for equipment installed in cars of the 70s and before with cars issued since the early 1980s having radios with controls that were located across the unit’s face. But there are six short-cut buttons on the outside and a colour touchscreen on the inside.

It has an FM RDS radio optimised to work with OEM whip aerial along with integrated sat-nav function with the data stored on a MicroSD card. As we; the radio can be connected to a USB memory stick or iPod full of music; as well as serving as a Bluetooth handsfree unit for a mobile phone. There was scant mention of whether it can do Bluetooth A2DP-compliant multimedia playback.

At the moment, the price for this radio is EUR€1184 VAT inclusive with the premium being for integration to the Porsche legacy. I also see this as a way to allow older drivers who spent most of their driving career through the 1960s to the 1980s or people who grew up with these drivers maintain the “comfort zone” associated with the traditional car-radio layout.

Porsche’s effort with this radio could be the start of a big question on how car-audio manufacturers and vehicle builders can court the classic-car scene with today’s technology and will come to the fore while people like retired mechanics see the idea of fixing up and driving classic cars including members of the 1960s-1980s fleet as a viable hobby.  Here, this could be about maintaining that look that complements the classic car’s dashboard. Similarly, it is also about vehicle builders who want to keep in touch with their moving legacy.