

Vodafone has a hotspot service here in Germany. All of their cable routers have a second wifi network everyone can use (unless you opt out).
When they introduced it, it had a big flaw: They stored the MAC address of your device in their database as authorized, but never deleted it.
Hypothetically speaking, you could pay for a month, cancel the service and then browse for over a year until they noticed you and kicked you out. 😆
But I would never do that, of course.
“I’M AS MAD AS HELL AND I’M NOT GOING TO TAKE THIS ANYMORE!”