Security system and method for granting access

A security system comprising:

• a display unit;
• an input unit configured for generating instructions in relation to user input;
• a storage storing a predetermined password and a plurality of modules;
• and
• a processor executing the plurality of modules;
• wherein the plurality of modules comprises instructions executable by the processor to:
• display a security access interface on the display unit, wherein the security access interface comprises a first image input field and a second image input field, the first image input field is configured for selecting one first image, and the second image input field is configured for selecting one kind of second image, each kind of second image comprises at least one second image;
• select one first image and one kind of second image and move the at least one selected second image to the selected first image in sequence according to the received instructions from the input unit;
• record at least one property in relation to the selected first image and the at least one selected second image;
• generate an input password according to at least one of the at least one recorded property;
• determine whether the input password matches the predetermined password;
• and
• grant access when the input password matches the predetermined password.