From publisher blurb:
Like Modern: 13 Arcane Operative Items, this PDF explores what kind of items the R&D departments of the various covert agencies might come up with in a world that features psionics.
As I looked through the various psionic powers and compared them to the spells in the SRD, I noticed quite a bit of overlap was possible; a number of spells that were used in that PDF had psionic powers that served the same function.
Rather than take up space by essentially duplicating the same sort of entry, I left those items off and stuck with six items that were different.