How about a photo? What does it look like?
Have had no good use with the $7 waterproof car key holder sold at Bass Pro Shop-Hooksett, NH which leaked around the rubber seal so's I traded the Subaru for an old Tacoma with an old double cut, simple non-electric key. The old car keys were waterproof, flat and easy to store a spare in your wallet and the ignition key lock was on the side of the steering column, where it should be!
What we got today is too MUCH technology .......

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