I use them constantly as a way of getting info from my computer to my phone. I use this bookmarklet to quickly generate a qr code that is either 1) the url of

I use them constantly as a way of getting info from my computer to my phone. I use this bookmarklet to quickly generate a qr code that is either 1) the url of the page, 2) the text that is currently selected, or 3) the text entered into the popup: javascript:(function(){var stext = window.getSelection().toString(); text = stext == "" ? window.location : stext; text = window.prompt("Enter Text to Make QRCode", text); window.open("https://chart.googleapis.com/chart?cht=qr&chs=500x500&chl="+encodeURI(text)+"&chls=H","qrlink","width=500,height=500");})()