Look for ways to detect touch screens with javascript. There's a 0% possibility that a phoneposter has JS disabled. There is however >0% possibility that someone is browsing from some gay laptop that has a touch screen, but sometimes sacrifices have to be made.
If you want to get rid of ALL faggots and not just phoneposters, use JS to delete the document or redirect to reddit or something.
Don't do this shit though
>>3088
There's privacy reasons you might want to spoof noscript tags on your browser.