Local area code plus Jenny's number has worked everywhere I've ever tried

Smart. Years ago I registered the number 500-5000 everywhere I could in my neighborhood. Just from word of mouth, the number got so popular they banned it at the local grocery store!

Give the phone number and zip of the store asking for the information. This way if there is data leak it is theroretically possible to track who originally asked for the data. This self-reference trick can be done with email address as well. The idea is that, in the event of unwanted data sharing, the consumer needs some way to know where the personal data came from originally.

The problem is that this info is tied to warranty information sometimes.

for expensive purchases maybe that's important

for my weekly purchase of bread, bacon and ketchup it's definitely not

I don't know what I'd do without the feeling of security I get from my comprehensive ketchup warranty.

I had a massive ketchup blow-out recently. It took out my entire refrigerator. There was leftover lasagna and broken beer bottles everywhere.

I'm just glad I'd bought the extended warranty.

Agreed.