Yes, you can use a mobile hotspot for security cameras. However, there are some things to keep in mind. First, the data usage of your security cameras will likely be high, so make sure you have an unlimited data plan. Second, the speed of your hotspot will affect the quality of your camera's video feed - the higher the speed, the better the quality. Finally, keep in mind that using a mobile hotspot for your security cameras will drain your battery quickly, so it's important to have a backup power source.