Visualizing RFID
jamie found a video on Warren Ellis's blog introducing a new way to visualize RFID fields. The film is by Timo Arnall and Jack Schulze. The subject is introduced in words on the BERG site (a design consultancy); the tech behind it is explored at Touch, a project that experiments with near-field communications. "This image is a photographic mapping of the readable volume of a radio field from an RFID reader. The black component in the image is an RFID reader... The camera has been fixed in its position and the reader photographed. Using a tag connected to an LED we paint in the edges of the readable volume with a long exposure and animate them to show the form."
Using their technique, we can now profile our cards to provide maximum protection with minimum tinfoil!
The main reason they did this is to map out the field *interaction* between the RFID tag and the reader, which is not a trivial thing to visualize based on the two data sheets.
The determined Real Programmer can write Fortran programs in any language.