Here are some interesting pictures on how to hack vending machines and how to manipulate them. Most Coke machines built since the late 1990s can be hacked with a simple access code. Once you enter the code, you can find out all kinds of information about the machine's sales. Here are just a few of these hacks.
If you still can't get into the vending machine's menu, you don't have to leave empty handed. This neat little trick only works with belt operated vending machines but it is still a useful little hack.
Please note that hacking a vending machine is of course illegal and morally wrong. I do not condone any kind of foul play due to hacking. Make sure to share this cool trick with your friends if it helped!
Check Part 2 for more updated version!