They can take a phone number too; I give them nnn-555-1212. It's always registered and you get the discount. I use this on vacation - "What's the area code he

They can take a phone number too; I give them nnn-555-1212. It's always registered and you get the discount. I use this on vacation - "What's the area code here?" "808..?" "My number is 808-555-1212". Bingo. But yeah, it's a hack.