It's a good idea to keep your wits about you when riding the Budapest subway. (They caught him.)
Buddy Bradley in the comments says: "According to the news report, he's been doing this phone theft thing regularly on Metro line 3. Part of his schtick is to act drunk or drugged, so as to disarm people around him into thinking he wouldn't be able to react fast. But it backfired on him as another passenger was suspicious of this behavior and started filming him. They caught him by showing the video to the police, who could identify and locate him since he just got out of jail. Back to the clink!"