In one aspect a device is disclosed for use as a bone implant comprising, a body having a pre-implantation shape and a post-implantation shape different from the pre-implantation shape. The lancet has a distal end with a lancet tip for carrying out a lancing operation. The LED power supply may be supported in a compartment above the heat sink. The document is encrypted and stored with a pointer to an encryption key on a tokenkey server. The method is applicable to any tunnel junction device including a magnetic field sensitive memory device such as a MRAM. A second organic insulating film covers the first organic insulating film and the connection elements.