Yadda ake Duba Lambobin QR akan Laptop?

Samun dama ga gidan yanar gizon kayan aikin a kan laptop, ba da damar kyamarar kwamfuta don kai tsaye duba lambar QR ta jiki, ko ɗora fayil ɗin hoto na gida (kamar hoton allo da aka adana) don sarrafawa.