In addition to data like fingerprints, travel itineraries, identification documents and gun licenses, the rules encourage screeners to acquire health insurance information, drug prescriptions, "any cards with an electronic strip on it (hotel cards, grocery cards, gift cards, frequent flyer cards)," multiple cellphones, email addresses, binoculars, peroxide, bank account numbers, pay stubs, academic transcripts, parking and speeding tickets, and want ads. The digital information singled out for collection includes social media accounts, cell phone lists, speed dial numbers, laptop images, thumb drives, iPods, Kindles, and cameras. All of the information is then uploaded to the TIDE database.

Screeners are also instructed to collect any "pocket litter," scuba gear, EZ Passes, library cards, and the titles of any books, along with information about their condition -- "e.g., new, dog-eared, annotated, unopened." Business cards and conference materials are also targeted, as well as "anything with an account number" and information about any gold or jewelry worn by the watchlisted individual. Even "animal information" -- data about pets from veterinarians or tracking chips -- is requested. The rulebook also encourages the collection of biometric or biographical data about the travel partners of watchlisted individuals.

While the guidelines nominally prohibit nominations based on unreliable information, they explicitly regard “uncorroborated” Facebook or Twitter posts as sufficient grounds for putting an individual on one of the watchlists. “Single source information,” the guidelines state, “including but not limited to ‘walk-in,’ ‘write-in,’ or postings on social media sites, however, should not automatically be discounted … the NOMINATING AGENCY should evaluate the credibility of the source, as well as the nature and specificity of the information, and nominate even if that source is uncorroborated.”