Cargo Features

[dependencies]
rust-cryptoauthlib = { version = "0.4.5", default-features = false, features = ["hardware-backend", "software-backend"] }
default = hardware-backend

The hardware-backend feature is set by default whenever rust-cryptoauthlib is added without default-features = false somewhere in the dependency tree.

hardware-backend default
software-backend

rust-cryptoauthlib has 3 features without comments.