http://www.bbc.com/news/technology-40760648

Using a cheap robot, a team of hackers has cracked open a leading-brand combination safe, live on stage in Las Vegas.

The team from SparkFun Electronics was able to open a SentrySafe safe in around 30 minutes.

The robot is able to reduce the number of possible combinations from one million to just 1,000, before quickly and automatically trying the remaining combinations until it breaks in.