In the dark ages, when we were going to unlock our car we had these things called keys. We knew that we had to use the key to unlock the door or open the trunk. Pretty simple. If we had a grocery cart full of groceries, or were loading up the trunk with luggage or whatever, all we had to do was take the key from our pocket or purse, insert into the lock, twist, and voila! We knew what we had to do in advance, and we did it. Worked. Every. Time. My wife always had her keys removed from her purse before she approached her car.
Now, onto the phone key. Will it work? (Yeah, almost always.) What if it does not work? Do I grab my key card also and have that handy while I shlep my luggage to the car? Do I remember to fumble around with my phone before I load up and head to the car? With the 3, we are not clear as to which method of access will work. Maybe we left our wallet or purse with the key card in the house while we put the luggage into the trunk. Then, if we unlocked the car with the key card, we have to remember to place it at the secret spot if we do not drive off within 15/30 seconds, remember to fetch the key card from wherever it has drifted during our drive, and remember to lock the car with the key card upon arrival.
This is too clumsy to be the preferred method of accessing our vehicles reliably, consistently, and safely.
We have not had issues with the fob for our S after four years. The only delays in access are the occasions when the car has not been driven in a couple of days, and we need to press on the handle for presentation. The fob is securely stashed in a pants pocket or my wife's purse.
Since this has been mentioned a few times, why is it acceptable for tech not to be flawless? Why is a 95+% success rate tolerated? We are not dealing with the human element here with our innate abilities to be careless, thoughtless, negligent, stupid, and all the other traits we possess that lead to mistakes and errors in judgment.