I'm planning for a wearable rfid project, put 1 reader and 1 tag on each t-shirt's sleeve.
When 2 users are shaking hands, the reader on each read the card of another.
Reader: Innnovations ID-2, 125kHz read frequency from http://www.sparkfun.com/products/8709
Tags: 1K and 4K, 125kHz
A question relating to the demonstration video here http://www.sparkfun.com/products/8709
Does the reader read 2 tags one after another, if the tags are not put together in stack?
Also, i found another limitation of using 2 or more readers in the same range from http://bildr.org/2011/02/rfid-arduino/
It says "more than one reader right next to each other can cause none of them to work due to interference."
Anyone has a solution for using 2 readers (next to each other) to read 2 cards?