metal keys
Jailer's jingling tools
Metal keys are physical keys made of metal, as opposed to digital or electronic alternatives.
The phrase typically appears in contexts distinguishing traditional lock-and-key systems from newer technologies: I still carry metal keys for my front door, The building uses keycards now—no more metal keys.
The redundancy of "metal" emphasizes the tangible, old-fashioned nature of the object.
- lockMechanism requiring a key
- keychainRing for holding keys
- brassCopper-zinc metal mixture
- unlockOpen a secured closure
- doorHinged room barrier
jingle · teeth · keyhole · duplicate · locksmith · janitor · ignition · house · deadbolt · front door · pocket · ring · turn · copy · spare · lost · rusty · skeleton
- lamellophoneskalimba, thumb piano, finger piano
metal keysbiometric scanner
Sensor reading physical traits
key fob · facial recognition · smart lock · keyless entry · voice recognition
metal keysaccess code
Credential for entry
password · PIN number · one-time code · QR code · authorization code
metal, keys, key, metals, metallic, metallurgy, metallurgical, metalwork, metalworker