Mobile device case with integrated locking assembly

A case for a generally rectangular mobile device, the case comprising:

• an inner shell assembly for partially enclosing the mobile device, the inner shell assembly including a top shell and a bottom shell configured to join together around a perimeter of the mobile device;
• an outer backing assembly configured to hold the inner shell assembly together, the backing assembly comprising an upper backing element configured to slide over a top end of the inner shell assembly, and a lower backing element configured to slide over a bottom end of the inner shell assembly and to seat against the upper backing element along a parting line positioned between the top and bottom ends of the inner shell assembly;
• and
• a locking assembly partially disposed in each of the upper and lower backing elements, the locking assembly configured to secure the upper and lower backing elements together around the inner shell assembly.