Are there any aftermarket Keyless systems

Are there any aftermarket keyless systems? I'm not talking about Remote entry. I mean keyless entry. Thanks

Passive Keyless Entry:

Try:

http://www.semiconductors.philips.com/applications/automotive/vehicle_access/rke/index.html

MO

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There is all different types of keyless entry systems depending on the technolgy you want. There is the remote type Audiovox has one APS45B.There is also a tap type in which you can tap on your drivers window a certain sequence like a rhyme of music.There is also combination type in which press buttons on a numric keypad.With a one-way satellitte module you can use any touch tone telephone to un-lock your doors,arm the alarm even activate the remote start.

oh okay, that's what it's called. Passive Keyless Entry. Thanks