Build a spy vault to hide your most prized possessions from meddlers and enemy agents with the ULTIMATE SPY VAULT & CODE KIT. Customise the combination for ultimate security, then build your own door or pressure plate alarm to scare off any intruder! You’ll also learn all about the science of making and breaking codes, secret messages, finger-printing and how to construct your own diversion safe to protect your room from prying eyes! The kit includes: a security vault a key a battery box a buzzer a clothes peg cord 32-page book with coding activities, DIY security measures and more.