SEE GBEGE............ Stefan Thomas has 2 guesses left before he's locked out of his fortune forever Stefan Thomas is a bitcoin millionaire. Or, he would be if only he could remember his password. The San Francisco software developer and CEO was an early adopter of bitcoin. Back in 2011, he produced an animated video explaining how the digital currency works. For his efforts, a bitcoin enthusiast awarded him 7,002 bitcoins. Later that year, he lost the password to his IronKey, the USB hard drive that contains the digital wallet that holds his bitcoins. Since then, the currency's value has skyrocketed, and Thomas' holdings are worth $220 million US ($321 million Cdn.) The IronKey gives users 10 password guesses before it encrypts its contents permanently, and Thomas' bitcoin is lost forever. He has two guesses left.