1. One Key-Multiple Locks System ( ÇÑ °³ÀÇ Å°¿¡ ´Ù¼öÀÇ ·Ï ½Ã½ºÅÛ )
ÀÌ ½Ã½ºÅÛÀº ÇÑ °³ÀÇ Å°·Î ¸¹Àº µµ¾î·ÏÀ» ¿ ¼ö ÀÖ´Ù. Áï µ¿ÀÏÅ°ÀÇ °³³äÀ¸·Î ÀÌÇØÇÏ¸é µÈ´Ù.
In this system, one individual key (proper key) is used to open many locks.
2. Multi Key System ( ´Ù¼öÀÇ Å° ½Ã½ºÅÛ )
µÎ °³ ÀÌ»óÀÇ Å°°¡ ÇÑ µµ¾î·Ï¿¡¸¸ »ç¿ëµÇ´Â °æ¿ìÀÌ´Ù. ¿¹¸¦ µé¸é ÃâÀÔ±¸ÀÇ Å°¸¦ ½Ä±¸ ¸ðµÎ°¡ Å°¸¦ º¹»çÇØ »ç¿ëÇÏ´Â °æ¿ì¿¡ ÇØ´çµÈ´Ù.
In this system, two or more proper keys are used to open one lock.
3. One Key One Lock System ( ÇÑ °³ÀÇ Å°¿¡ ÇÑ °³ÀÇ µµ¾î·Ï ½Ã½ºÅÛ )
ÇÑ °³ÀÇ Å°·Î ÇÑ °³ÀÇ µµ¾î·Ï¸¸ »ç¿ëÇÏ°Ô ±¸¼ºÇÑ´Ù. °¡Àå ÀϹÝÀûÀÎ °æ¿ìÀÌ´Ù.
In this system, one individual key is used to open only one lock.
4. Master Key System ( ¸¶½ºÅÍÅ° ½Ã½ºÅÛ )
°¢ µµ¾î·ÏÀº °íÀ¯ÀÇ ÀÚ½ÅÀÇ Å°¸¦ ¼·Î °¡Áö°í ÀÖ°í, ÀÌ·¯ÇÑ °¢°¢ÀÇ µµ¾î·ÏÀ» ¸ðµÎ ¿ ¼ö ÀÖ´Â ÇÑ °³ÀÇ Å°¸¦ º°µµ·Î ¸¸µé ¼ö°¡ Àִµ¥ ÀÌ Å°¸¦ ¸¶½ºÅÍ Å°¶ó ºÎ¸¥´Ù.
In this system, one master key is used to open all the locks and each lock still retains its own proper key.
5. Grand Master Key System ( ±×·£µå ¸¶½ºÅÍÅ° ½Ã½ºÅÛ )
¸¶½ºÅÍÅ° ½Ã½ºÅÛÀ» »ç¿ëÇÏ´Â °÷ÀÌ µÎ °÷ ÀÌ»óÀÌ°í ¸¶½ºÅÍÅ°°¡ ¼·Î ´Ù¸¦ °æ¿ì À̵é Å°¸¦ ¸ðµÎ ¿ ¼ö ÀÖ´Â ÅëÇÕ±Ô¸ðÀÇ ¸¶½ºÅÍÅ°¸¦ ¸¸µé°Ô µÇ´Âµ¥ À̸¦ ±×·£µå ¸¶½ºÅÍÅ°¶ó ºÎ¸¥´Ù.
In this system, one grand-master key is used to open all locks within the system and several section master keys are used to open all locks of each section, while each lock still retains its own proper key.
6. Sub Master Key System ( ¼ºê¸¶½ºÅÍÅ° ½Ã½ºÅÛ )
±×·£µå ¸¶½ºÅÍÅ° ½Ã½ºÅÛ ¾È¿¡ ºÎºÐº° ¸¶½ºÅÍ Å°¿¡ ´ëÇØ µµ¾î·ÏÀÇ Çüü°¡ ´õ ¼ÒºÎºÐÀ¸·Î ÂÉ°³Áö°í ¸¶½ºÅÍÅ°µµ °¢°¢ ÁÖ¾îÁø´Ù.
Within the grand master key system, lock patterns for the section master key are further subdivided into smaller sections and are each provided with a master and grand-master keys.