You can inject one under your skin and no one will ever notice, Using short-range Radio Frequency Identification (RFID) signals, it can transmit your identity as your pass through a security checkpoint or walk into a football stadium. it can help you buy groceries at wal-mart. in a worst-case scenario- of you are kidnapped in a foreign countty for example- it could save your life.
are you agree with this thing?
I have heard a people that inject the radio transmitter on his hand and that function as the bitcoin wallet. i wonder in the future maybe people will not need cash. they just need they fingerprint maybe to make some payment and buy something