Eli5: How does Wolt/Doordash (app) know I shared my signup link (refferal) with someone 8 (!) years ago.

Question

Short story. When wolt came I was broke and I sent my Snapchat contacts (around 50-70 people at the time) my refferal link.

I have never shared it anymore. Do this date (today) I still recieve credits saying that someone signed up.

I understand it could be through cookies but since 8 yrs ago dont they expire? Dont people get new phones etc? I guess i have received like 50 free credits throughout this time

edit: referal link sent through snapchat 8 years ago

In: 0

Answer 1

>I understand it could be through cookies but since 8 yrs ago dont they expire? Dont people get new phones etc?

Referral codes are specific to you. It doesn’t matter if the new phone or anything like that is used, the referral code stays the same and is linked only to your account.