Addon to wordpress for website. Creating an addon.

I need someone to create me an addon for wordpress that can be switched between pages.

It will be an element that appears on the page when switched on - a small element somewhere near 80% scroll down, which when clicked will generate code for the visitor and copy it to their clipboard.

The code must always be generated differently for each visitor. The codes must be generated in some range of letters and numbers.

In the admin options of this plugin should be an option to:

- change the page on which it should appear

- select the range of digits + numbers from which the codes are to be generated

Mainly it will be a small graphic element.

If you have any questions feel free to contact me.