RFID Tag Rectangle
Buy 10 and save 13%:€2.20 €1.82
Buy 25 and save 19%:€2.06 €1.70
Buy 100 and save 24%:€1.94 €1.60
EM-4100 family passive rectangle (credit card) tag with 125 kHz activating frequency. Each tag has an unique 10 digit ID, so multiple tags can be used in a single project.
Note: These tags are suitable for the readers below. For other readers we cannot confirm suitability. Tags cannot be returned.
More information is available on the website of Sparkfun.