Dynamic unlock mechanisms for mobile devices

A system, comprising:

• at least one computing device implementing one or more applications, wherein the one or more applications cause the system to:
• cause a security task to be provided through a user interface of the system, the security task, when completed successfully, causes the system to unlock and the security task generated by at least obtaining a set of images generated at least in part by an operation of the system, where the security task obtains a user interaction that places a subset of images of the set of images in an order;
• modify the security task by at least modifying the subset of images;
• determine a response to the security task is correct;
• and
• provide access to the one or more applications of the system.

A non-transitory computer-readable storage medium having stored thereon executable instructions that, as a result of being executed by one or more processors of a computer system, cause the computer system to at least:

• generate a set of security tasks for unlocking the computer system by at least obtaining a set of images maintained by the computer system, at least one security task of the set of security tasks receiving as an input user interactions with a subset of images of the set of images;
• obtain a response to the at least one security task to be displayed through a user interface of the computer system, the response including the input associated with user interactions placing the subset of images in an order;
• provide access to the computer system based at least in part on the response;
• and
• modify the at least one security task by at least modifying the order based at least in part on a modified order provided by a user.