Scott has an Apple wireless keyboard, but now there is some battery corrosion and he can't get it out to clean it. Leo says this is why you should always remove a battery if you're not going to use a device for awhile. Leo advises bringing it to the Apple store. Scott did and Apple ended up replacing it free of charge. Leo says that's why you pay more for Apple.
Trish's keyboard seems to randomly type letters and numbers when she's not touching it. Leo suspects the keyboard could have shorted out or the USB port it's plugged into is shorting out. She should try a different keyboard. If that doesn't fix it, then that would point to a different problem. Leo also suspects that the computer may still be paired to the wireless keyboard and her daughter is playing with it, causing the issue!