Hackers have released source code that allows the “backup” of RFID-protected passports, although the tool can potentially be used to create fake or cloned documents.

The Hacker’s Choice, a non-commercial group of computer security experts, has released a video showing a cloned passport being approved by a security scanner at a Dutch airport. When the reader scans the passport it is revealed to belong to one Elvis Aaron Presley, complete with picture.

A blog post on the site explains that the “attack makes it possible to copy, forge and modify the data so that it is still accepted as a genuine valid passport by the terminal.”

However, the scanner is not the same type used at actual border controls, so it is unclear whether this tool could actually be used to fool passport control security checks.