Unified Patents is seeking prior art on at least claim 1 of US Patent No. 7,779,252. The patent is owned by NPE, Speir Technologies, an Atlantic IP Services subsidiary. The '252 patent generally relates to a Mobile PDA computer system includes a secure user processor), a non-secure user processor, a cryptographic engine, and a shared human/machine interface (HMI). The secure user processor can be comprised of a first trusted microprocessor and a first trusted operating system executing on the first trusted microprocessor. The non-secure user processor can be comprised of a second non-trusted microprocessor and a second non-trusted operating system executing on the second non-trusted microprocessor. A cryptographic engine can be comprised of a third trusted cryptographic processor and a third trusted operating system executing on the third trusted cryptographic processor. The cryptographic engine can be configured for encrypting and decrypting data. A first data communication link communicates data between the secure user processor and the cryptographic engine. A second data communication link communicates data between the cryptographic engine and the non-secure user processor. In this way, the cryptographic engine forms a bridge between the secure user processor and the non-secure user processor. An HMI comprised of trusted hardware for user input and output is time-multiplex-shared among the secure user processor, the non-secure user processor, and the cryptographic engine in a secure fashion. Traindex is a machine learning enabled search service. They have provided an ordered list of most semantically similar patent documents. The results are filtered to include only results with the publication date preceding that of the patent being challenged. The link can be found here: https://www.traindex.io/prior-art/US-7779252-B2 Techson IP has provided its Full validity-focused Limestone|Report https://www.limestonereport.com/ which includes: a list of highly relevant prior art patent leads - individually ranked to the claims and tiered by research efficiency; summary predictive analytics about the search; a full CPC technology profile. Interested professionals may take them and craft work products from there. The Full Report link is here: https://s3.amazonaws.com/report.limestoneip.com/yMYZGgnp1kAsZVMwXz9sAV.full.html IPscreener shows an AI generated list of relevant prior art also helping Patroll searchers to faster read and understand of documents found by highlighting relevant passages. Access is free for the exploring the contest case, to view, comment and export identified texts. The link can be found here: https://my.ipscreener.com/token/S7DcQfVoXWkcbwPxkeZD4W Ambercite has provided a list of similar prior art patents based on its citation-based algorithms, predicting similarity. This list is provided in an easy-to-use interface, and known citations have been hidden from the results. A free trial is available to run your own searches. The link can be found here: https://www.amberscope.com/ambercite-ai.html?share=5mqxeydzmKOirBq0CL5NrK View the Similar Documents (patents + scholarly publications) generated by Google Patents: Patents: https://patents.google.com/?q=~patent%2fUS7779252B2&before=filing:20060321 NPL: https://patents.google.com/?q=~patent%2fUS7779252B2&before=filing:20060321&patents=false&scholar ** PLEASE READ THE RULES FOR THIS CONTEST BEFORE YOU DECIDE TO PARTICIPATE. ** ** TO QUALIFY FOR CONSIDERATION, A CLAIM CHART IS REQUIRED. ** ** PLEASE USE THE PROVIDED CLAIM CHART AS A TEMPLATE ** ** PRIOR ART THAT HAS BEEN PREVIOUSLY CITED DURING PROSECUTION WILL NOT BE CONSIDERED. **