# ykman config > Enable or disable YubiKey applications. > Note: You can use `ykman info` to see currently enabled applications. > More information: . - Enable an application over USB or NFC (`--enable` can be used multiple times to specify more applications): `ykman config {{usb|nfc}} {{[-e|--enable]}} {{otp|u2f|fido2|oath|piv|openpgp|hsmauth}}` - Disable an application over USB or NFC (`--disable` can be used multiple times to specify more applications): `ykman config {{usb|nfc}} {{[-d|--disable]}} {{otp|u2f|fido2|oath|piv|openpgp|hsmauth}}` - Disable all applications over NFC: `ykman config nfc {{[-D|--disable-all]}}`