nissan, sharp and japanese phone company NTT Docomo developeed a cell phone for the japanese market that includes a built in smart key for your thier cars. maybe they will bring it to america, we can only hope toyota follows suit, or lets us buy the watch! The smart cell key phone | Car Tech: An automotive blog from CNET - CNET Reviews press release NTT DOCOMO: Press Releases - Nissan, NTT DOCOMO and Sharp Jointly Develop World's First Mobile Phone with Built-in Intelligent Key
Many of my friends already have the key fobs where all they have to do is have the key in their pocket or purse while standing next to the car, and if they push a button on the door handle, it automatically unlocks. Many manufacturers already offer this, and I'm sure many will follow suit. It's very convenient, as you don't have to actually take your keys out of your pocket. I'm not sure how easy it will be to integrate the transponder into people's cell phones though. I bought my car four years ago, and I just bought a new cell phone a month ago. If I decide to buy a new car next year, will I have to ditch my iPhone and start using a "Toyota Phone" instead? (Will there be a "Corolla Phone," "Tundra Phone," and "Highlander Phone" also? Lol.) Perhaps, each phone would have a replaceable card, like a SIM card is replaceable, and the auto manufacturer would give you a card with a specific serial number/code for your car, and you'd then place that into your phone.
I switch cell phones about every 6 months. Last thing I want is to be tied to a limited choice of phones just so I can have a smart key that I already have sitting in my pocket that I never have to take out.
This might help: http://hiwaay.net/~bzwilson/prius/key_fob.html Also, search for "remote keyless entry" and "Atmel" or: Remote Keyless Entry with the MAXQ3212 - Maxim Bob Wilson
