Proximity Keys
Keyless entry
Push-button start
No physical insertion required
Uses encrypted radio signals
Higher security


Remote keys
Lock/unlock buttons
Boot/trunk release (sometimes)
Panic/alarm button
Uses RF (radio frequency) signals
Less advanced than proximity keys




Transponder Keys
Metal key + electronic chip
Must be programmed to the car
High theft protection
Needs to be inserted in the ignition
About CalKeySupply
CalKeySupply is a trusted supplier of high-quality automotive keys, serving both professional locksmiths and the general public.
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