[StephenAmar]

FYI, you can temporarily disable keyless entry on Toyotas fairly easily:

Hold down the lock button Hit the unlock button twice

[peteri]

On my Lexus that doesn't disable keyless entry, just puts the key fob into sleep mode. There is an option somewhere to disable keyless entirely, but when enabled it means you need to hold the key near (I think less than 10mm from meory) to the push button start.