Apple's "Find my" how can I do and authenticate questions!

[What's different between this Build code?]

1: The Apple's "Find my function" ,How big is the "Find my SDK" ,RAM? ROM? 

We can use nrf52820, or nrf52811,or nrf52810 to develop?

We must use nrf52832 to develop Apple's "Find my SDK" ?

2: Apple's "Find my authentication " need Ring or LED Display?

3: Apple's "Find my authentication " must use MFI IC in design？The customer no need encryption and decode function so they want to spare it.

4: Apple's "Find my authentication " test case if need make a sound? Apple's "Find my authentication " test case if need NFC function? 

Please answer the quetions as quickly as possible,The customer is very hurry for design. Thans very much.

[LeonWu]

If the customer signs the MFI Find My agreement, they should have all the answers... nRF52832 is the bottom line for Find My development, suggest you contact with Nordic local sales to confirm the details.

Find My development guideline from Apple has all the details regarding development and certification. 

Leon