Currency switcheroo in Peru

How it works:

• Version 1: swapping the note you have given to a note of lower value, then demanding that you top up or shortchange you.
• Version 2: giving you Mexican pesos as change (worth less) instead of Peruvian soles.

Places to beware:

• Anywhere

What to do:

• Get familiar with the Peruvian soles and always check your change.