Recently came across Devin Knight's book about the short change scam. Being interested in this author's previous releases, this new one deals more with the area of deception, scams, cons and cheats. The book is short and quickly gets to the point. There is a lot of information out there on how to prevent the scam from happening, but most of it doesn't explain well enough. Devin not only breaks down the scam step by step, but also provide additional tips on how to protect yourself, as well as gives you an exercise to learn to spot it and prevent it from happening.
If you - or know someone who - work/s at a shop, mall or related places, they need to know this information. The best way to counter the scam is to prevent it from happening and that's what this book is all about. Overall I would say it's pretty much worth reading and for only $7 picking this up is a no-brainer.