Using a card, belonging to somebody else is illegal everywhere in the world I believe... Being an avid security, anonymity and privacy advocate, I still consider it's generally a bad idea. POS payments are also not possible I guess and could get you into some serious trouble and issues with law enforcement. Company card as suggested by some poster would have been more realistic I guess. Besides, there's a possibility the legal owner of the card/account (a bum or alcoholic from a place like Belarus or something like that?  ) will find out it was opened in his name and cancel it?