Like many of us, Benjamin Blundell is a bit tired of hearing about wearable technology when it seems that many of the examples just aren't very practical or useful. He decided to do something about that. He created this fantastic example of what wearable technology should be -- aesthetic and functional.
Blundell says on his blog that RFID is quite prevalent in London, where he lives, so he carries a card with a passive RFID chip in it. This card grants him access to his local hackerspace and has some other common uses around the city. He set out with the goal of adding the RFID chip to his wedding ring.
As you can see in the picture, that plan didn't come to fruition. He needed more space for the first prototype than his wedding band afforded. He pulled the RFID chip from a card by dissolving the card in a bowl of acetone and then carefully peeling back layers to reveal the chip. Then he tore the aerial out of an RFID keychain, since it was much closer to the form factor he wanted.
The last part was to design a ring to hold it all and then have it 3D printed. In the end, it worked out fine, and the device seems to have met his goals. He does say that he is planning Version 2, which should be more compact.
— Caleb Kraft, Chief Community Editor, EE Times
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