Revelation 13:15-18, mark(Strong's Greek #5480 - charagma-an imprinted mark,a scratch or etching), Revelation 14:9-10
Here is some links on the RFID Chip:
http://en.wikipedia.org/wiki/Radio-frequency_identification
http://en.wikipedia.org/wiki/Microchip_implant_%28human%29
http://en.wikipedia.org/wiki/VeriChip
http://en.wikipedia.org/wiki/Digital_Angel
