I’ve been looking for a simple way of reading an RFID tag from the Oyster card an its equivalents elsewhere. Prices seem to vary, as do the ways of interfacing. I think I am settling on USB across the whole board for my home security devices; its pretty ubiquitous, and devices are generally reasonably well priced.
Now I have seen the RFID reader I think I want: the Phidgets RFID Reader. Looking around to purchase one shows some major variation in price:
- Robot Shop: US$52.64
- Trossen Robots: US$55
- Active Robots: UK£68.61
So, looking at today’s exchange rate of US$ to UK£ of 1.6518, the Active Robots price is US$113.33. That’s US$60.69 more than Robot Shop, or a mark-up of 115.29%. Over double!
Time to order via the US.
PS: Now I have the unit, I realised the difference between 135 kHz RFID tags (like the Phidget unit) and the 13 MHz ones (like the Mi-Fare Oyster)…. you can’t read an Oyster Card with a Phidget. *sigh*