Acronyms, Shorthand, and Definitions - owaink/libfprint GitHub Wiki

There's a lot of acronyms, initialisms, and other jargon heavily used in this project with some of it being out own creation, some coming from libfprint, and some lifted from strings in the Goodix Windows drivers.

Acronym	Definition	Source
FP	FingerPrint, FingerPrint device	libfprint
FPI	FingerPrint Image device	libfprint
CMD	CoMmanD	Goodix
ACK	ACKnowledge	Industry Standard
MCU	MicroController Unit This is the actual device we are talking to, this essentially refers to the device but technically the microcontroller and the actual sensor are different	Goodix
PSK	PreShared KeyThis is the shared secret used to establish secure communication with the device	Goodix
SSM	Sequential State MachineDriver model of current state of the scanner, mostly linear in our cases	libfprint
OTP	One Time ProgrammableThis is the sensor's configuration, should be tuned to each individual physical sensor, holds information like sensor id and calibration values	Goodix
NOP	No OPeration	Goodix
FDT	Finger DeTection (No hard definition found, this is our best guess)	Goodix
TLS	Transport Layer Security	Industry Standard
NAV	Unknown, probably navigation	Goodix