Login on a website with the help of your smartphone without typing your password
i think i may have had a clever idea and it's your job to tell me that the idea is either bullshit (why?) or already in use (where?). here it is:instead of a username/password form the website displays a qr code containing a random string generated by the server. the browser holds connection and is waiting for a response from the server. you scan the code with you smartphone, the app applies...