If you’re a USA citizen and traveling to Vietnam booking your own ticket, chances are you would need a Visa, you can save some money by taking your photos and print your own photos also. As of today, the photo size for Vietnam Visa is 2 inch by 2 inch, but don’t worry about this, use this site http://www.idphoto4you.com/ basically upload your photo and it will generate a printable photo file for you to print or print at walmart or any digital photo printing places. I just did earlier today and it work great, took no more than 10 minutes to take photo, upload to website, then download from website, then upload to walmart photo, then an hour later it’s ready 🙂 I high recommend this site: http://www.idphoto4you.com/