PiFinger for Raspberry Pi is the latest product in the advanced range of technology of SB Components. PiFinger, the first-ever Fingerprint HAT for Raspberry Pi Comprise of onboard Nuvoton MCU with an on-chip crypto-accelerator, Cortex-M23 TrustZone, and XOM facilities. A user can use the communication protocol to the PiFinger with commands over the UART protocol with the Baud rate 9600 bps or USB 2.0 full speed.