21. They keep babies behind doors equipped with combination locks . 22. Nearly all safes made after World War II have relock triggers in their combination locks . 23. Retailer Brookstone recently began selling plastic combination locks in packs of 12 for $ 15. 24. Some keys are stored in special safes on board which are secured by combination locks . 25. Additionally UL-768 certifies the combination lock against tampering. 26. Two more tribe members then solved a puzzle to reveal the solution to a combination lock . 27. Electronic Combination Lock Designed to Keep Out Hackers 28. Corridors inside headquarters were sealed with combination locks . 29. Later, in February, a group of girls threw a purse filled with combination locks at Minniejean. 30. The touchscreen is also used for context-sensitive actions, such as barricading doors or hacking combination locks .