the use of his legs back. it's a 44-pound exo skeleton that uses computers, motorized joints, a battery pack and braces to help paraplegics stand up and walk again. >> i'm looking at the watch and he tells me it's time to stand or sit and i didn't want to press that yet. i wanted to stay here for one more minute. because it's been so many years. >> the man who invented rewalk has a story of his own. ahm ahmidgoffer is a paraplegic. he began questioning the outdated wheelchair he was confined to. >> then i was wondering, how come a wheelchair is the only solution? i asked why people can land on the moon. >> in that moment, his idea for robotic trousers came to life. rewalk says the device is currently being used in europe,