Modern and technologically advanced vehicles are equipped with keyless entry systems. When these cars lock up, professional locksmiths use a variety of tools to gain access. These include a key analyzer or a VATS access key decoder to determine the car's electrical resistance values, as well as a mechanical code key cutter to create an accurate key without having to duplicate the original one. Additionally, long-range tools are used to press an unlock button inside the car or recover keys that are locked inside the car.
Rather than entering through the door under the glass window, these tools enter the car through the door seal. If the key breaks and gets stuck inside the car lock, a broken key extractor is used to remove it. As with many trades, locksmiths are in high demand and those who are well-trained can do quite well, especially in underserved markets. If you're interested in pursuing a career in locksmithing, they can teach you many of the techniques and methods they use.
When a locksmith uses these tools to enter the car door, you know you have someone who has been well trained in opening cars.