In a redacted acquisition document obtained by the tech news site 404 Media, the immigration agency proposes entering into a contract to buy “all-in-one” tools from a company called PenLink that will allow agents to “compile, process, and validate billions of daily location signals from hundreds of millions of mobile devices.” The document also mentions payments for services involving “face detection,” “advanced face search,” and a “dark web data feed.”
Probably the best way to make a tight seal is to make it twice as long as needed, then just fold the opening over three or four times.
I’ve found that to be pretty effective.
I made one with hair elastics wrapped up in the duct tape to keep the seal shut.
None of the shit I ordered off Amazon worked worth a damn so I made my own.