History
– Automobiles had door keys earlier
– First ignition keys with starter mechanism introduced by Chrysler in 1949
– Combination ignition and starter switch eliminated starter button
– Flip keys resembling jack knives made in the 1950s
– Signa-Craft and other manufacturers produced Crest Keys with enameled auto manufacturers logo
Car enthusiast shows
– Car show judges score down for not having correct set of keys with original automakers logo
– Original logo blanks are no longer manufactured
– Keys with automakers logo and lock code stamped on them are preferred
– Many original logo blanks available from old stock supplies
– Car enthusiasts maintain stock look of their car keys
Types
– Internal cut key has rectangular blade with wavy groove
– Must be cut by special key cutting machines
– Transponder keys may also be called chip keys
– Transponder keys have signal-emitting circuits built inside
– Chip keys protect cars from theft by immobilizing engine if wrong key is used
Internal cut
– Internal-cut key has wavy groove cut up the center of the blade
– Blade has identical wavy groove on the back, making it symmetrical
– Must be cut by special key cutting machines
– Also known as sidewinder or laser cut key
– Works no matter which way it is inserted
Transponder
– Transponder keys have signal-emitting circuits built inside
– Cars computer transmits a radio signal to the transponder circuit
– Circuit responds by sending a coded signal back to the cars computer
– Chip keys are difficult to duplicate
– Chip keys protect cars from theft by immobilizing engine if wrong key is usedSources: https://en.wikipedia.org/wiki/Car_key
