Bump keys can open around 90% of the doorways in America. Every lock manufacture In essence will have it’s personal bump key. When you have a Schlage or other lock then you should have a particular bump key made for that lock.
So principally there is just one bump key for a model or model of lock. The manufacturer of these locks don’t promote the bump keys keys. They sell blank keys to locksmiths or corporations with a key copying machine with good intentions but the dangerous guys then make bump keys from the blanks.
This has been occurring for awhile now but with the arrival of the internet and the free switch of data and data is has gotten out that you would be able to make bump keys or mainly a modified key that can almost every unlock in America.
OPENING LOCKS BY BUMPING IN FIVE SECONDS OR LESS IS IT REALLY A THREAT TO PHYSICAL SECURITY,