I have seen Visas being affixed by Embassies in Passport.I have come across E Visa issued by countries.I have experienced Visa being laminated in Passports at the port of entry by countries.Also Visa On Arrival being stamped by many countries.But when I entered Hongkong a rude surprise awaited me.The officer coolly took a paper bit printout like one gets in Super markets and stapled it in one of the pages in my Passport.I was astonished to see this.