With the fixers, you can scan your documents even faster, since your phone is always in the right position. To do this, you put your mobile phone on your scan add-on, so that your mobile camera captures the documents optimally. Then remove the protective film of the fixers and stick one to the top and one on the right side of your mobile phone. This saves you the annoying align while scanning and makes sure to have an optimal picture.
If you later on buy another mobile phone, you can remove the fixers again from the add-on. Remove the fixers carefully and slowly and remove any glue from the add-on. Then you can adjust your phone with two new fixers to your box.
The fixers are, however, completely optional. If you use your box, for example, with several mobile phones, or mobile phone and tablet, you should do without the fixer.