Using hacking devices that can be easily bought online, criminals are able to remotely open garage doors. Just moments after they pull up to a family home, the garage door suddenly rolls wide open — but the remote is inside. That’s just scary.”Tarkegn said she had no idea how they opened her garage door. Experts believe the thieves used hacking technology, likely a cloning device that can capture and replay garage door signals. “That’s when these signals are being recorded.”A family's car was stolen after thieves broke in through a garage door.