Codes hiding in the keyboard
A classic trick is to type a message with your hands moved one key to the side, so HELLO comes out as JR;;P. Another swaps each letter for the one in the same position on a QWERTY keyboard, where Q stands for A, W for B, E for C, and so on through the rows. Text typed with the keyboard set to the wrong layout, like Dvorak, looks like gibberish in the same way.
Pick the version that fits your puzzle. The cipher identifier also checks for shifted and QWERTY order text automatically.
Example
Jr;;p typed one key to the right decodes to Hello.