Cargo Features

greetd-stub has no features set by default.

[dependencies]
greetd-stub = { version = "0.3.0", features = ["fingerprint"] }
fingerprint = libfprint-rs

Affects data::PRINT, session::SessionOptions.fingerprint

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

libfprint-rs fingerprint?