02/07/2008

Oyster cards and their impracticalities



So, you've bought an oyster card when you last went through London. Good! Where is it? No? Don't remember? Well I intend to break this cycle so you will never need to cash in more than one pile of £3 TFL shares. The first stage goes like so:

1) As Skeptobot's blog (may he be respected for scientific endeavour) shows here an oyster card can be gutted to leave the small chip and antenna intact.
2) As I will elucidate once I have completed the process, I intend to embed this into a wristband or watch strap to allow you to not forget your oyster. If the Oyster is the only form of proximity RFID card you have (others include the barclays one card, that uses a similar tech to allow you to pay for oystering, and Southampton uni-link pre-paid student cards) then it could be stitched into the body of your wallet (or taped in in the case of duct-tape wallets). Other RFID cards tend to interfere with each other and the garbled mass of signals means you pay penalty fares.

Edit: Here's some more info about antenna arrangement!

The ultimate advance of this concept is the touch to pay visa card stripped apart and then implanted in, say, your forearm on the back of your wrist. You would sacrifice standard card payment as the chip'n'pin chip would not work (your hand wouldn't fit in the bloody reader), but the average londoner could go a whole day without even carrying a plastic card around.

If anyone knows whether mobile phones would be a liability in terms of disrupting or hacking/reading the oyster data, let me know as one of the other tests will be to place the circuit on the back of my nokia 6230i (10 mins searching: nokia have released roughly 200 diferent phones up to the curen gen: Proof here!)

Catch you guys later for another longboarding post.

No comments:

Post a Comment