we have a created for a client a web app (PHP) for meeting scheduling.
We send SMS to users in order to confirm their meeting, with a link to click to confirm their meeting.
Most of user have enable website preview in SMS on their phone.
How can I checked that the page is loading from a phone 'sms browser previewer' OR is really clicked / loaded by a human ?
A simple get_browser could not help, because browsers previewers are often the browser of the user... and it's not a bad robot crawling something..
The client's process is : the user click the link received on his phone, the meeting is confirmed.
Any tips ? Can't find any idea how to detect that and prevent 'false validation'.
thanks !