tamper-proof 
adjective
Made so that it cannot be interfered with or changed: driving licences with tamper-proof colour photographs...
- It's weatherproof and tamper-proof, and there's no reason why this ring couldn't be used as a ‘wallet’ for digital currency.
- The minister has lectured all that would listen that his new system is tamper-proof and idiot-proof.
- Apart from saving 9,000 tons of ballot papers the method was much more error-free and tamper-proof and, very importantly, less vulnerable to the violence and fraud problems of previous elections.
- Johnson, Andrew
- Johnson City
- Johnson, Cornelius
- Johnson, Earvin
- Johnsonian
- Johnson, Jack
- Johnson, James Weldon
- Johnson, Jimmie
- Johnson, Lyndon Baines
- Johnson, Michael
- Johnson, Philip
- Johnson, Robert
- Johnson, Samuel
- Johnson, Thomas
- Johnson, Walter
- Johnson, William
- John, St
- Johnston
- Johnston Atoll
- Johnston, Joseph E.
- Johnstown
- John the Baptist, St
- John the Divine
- John the Evangelist, St
- John the Fortunate