Tool to open locked doors from outside?

One common tool used to open locked doors from the outside is a lock pick set, which includes various picks and tension wrenches designed to manipulate the pins inside a lock. Another option is a bump key, a specially cut key that can be used to open many standard locks with a quick bump. For more advanced locks, a shim or a lock bypass tool may be used. However, it's important to note that using these tools without permission can be illegal and unethical.