- Log in to the eyos website.
- Press the 'Tills' tab. This will display a list of all tills on the account under their respective stores
- Click on the till you wish to get the ID for
- Look in the url bar, and copy the text after "device?key=" (up to the next '?' if one exists)
- This is the ID for that till
- You can then replace the $key in the posting url (/receipts/raw/$key)