Bluetooth E-ink Smart Card
Bluetooth E-ink Smart Card is an active smart card made of ink screen (electronic paper screen), PCBA, battery and RFID chip (customers can add fingerprint module, NFC chip, buzzer, digital keys, other electronic components according to their own needs)
Bluetooth E-ink Smart Card is an active smart card made of ink screen (electronic paper screen), PCBA, battery and RFID chip (customers can add fingerprint module, NFC chip, buzzer, digital keys, other electronic components according to their own needs)