The easier choice...
It was fluorescent ID numbers tattooed on one's forehead, an RFID chip neck implant, or facial recognition software ... so which, do you think, was the easier option to implement?
(RFID chips come later, implanted at birth, as part of the mandatory Free Universal Benefits And Recognition* program. American pilot programs will demonstrate efficacy, practicality, and universal mandatory compliance measures Formulated Upon Conception; Keyed On Foreseeable Futures.*
(Acronyms are discouraged)