[small business owner]

After driving back home from my Dad’s house I would place a collect call to him and he would know I was back home safe. He
never had to accept the collect call.

[Scrambler Bob]

A pioneer hacker.

[P.O.E.]

My Mom would put a dime in my sneaker. When I was ready for her to come pick me up from the pool, I would ring three times & hang up (and get the dime back). That was the signal