nrf52832 NFC for payment purpose

[Bosemani_Raja]

Hello everyone,

I have a few questions related to NFC in nrf52832.

1. UUID in nrf52832 NFC is Unique?

2. Can I use nrf52832 NFC for payment purposes..? if yes How I can do?

3. RFID and NFC both are working at the same time or do we need to choose any mode?

(In RFID mode it should transmit the UUID only, In NFC mode the data transfer should occue)

4. for payment method any external encrypting chip is required?

<<Thank you>>

[Bosemani_Raja]

Hai Edvin,

Thank you.

sorry for the late reply.

I need one more clarification.

NFC ID in NRF52832 is unique?

or Device ID is Unique?

I need a universally unique ID.

if it's not unique. any other possible solution to get a Unique ID.

[Edvin]

The IDs are randomly generated during production. Given the number of bits that are randomly generated, it is unique for all practical matters. You can do the math if you doubt it. 

We get this question a lot on the Device ID, which is used for BLE addresses. This is only 6 bytes, which gives 2^(6*8) bits, which is roughly 281 474 976 710 656 different combinations. 

The device ID uses more bytes, and hence it is even more unique.