As part of another project (as-yet-unblogged), I’ve been looking at RFID tags – and more specifically, how they can be used within robotic and entomological systems. The wasp below is sporting an RFID tag that costs €3 as part of a study of wasp movements (image credits: ZSL – for more on that, click here…). RFID is becoming an everyday commodity…

One of the most commonly accepted RFID systems in operation is the Oyster card. I put mine into a glass full of nail varnish in order to remove the chip inside.

After a few hours, the adhesive holding the components together was degraded to such an extent that the whole thing was a floppy mess, ready to be peeled apart.



This is version 2.6 of the Oyster card – previous versions contained copper wire, but this one uses conductive ink as the arial. The flexible centre is now ready for embedding into anything – e.g. a jacket sleeve – ready for use. The pencil points towards the “ID” part, which contains the chip’s all-important frequency.