For example, by recording the ambient noise of the userâs location from a mobile device and comparing it with the recording of the ambient noise from the computer in the same room on which the user is trying to authenticate, one is able to have an effective second factor of authentication.
RE: PTFE Vs. PTFE is the chemical description for polytetrafluoroethylene, or better known as DuPont's Teflon. Many other suppliers also manufacture PTFE grannular and free flow resins. TFE is the chemical name for tetrafluoroethylene, which is a colorless and taseless gas, extremely toxic and ultimately deadly. Don't confuse the two, although the plastics industry has misused these terms over the years interchangably. If you waant more information check out the SPI, FPD web site.
Expanded PTFE Gasket Tape . TFCO PTFE Gasket Tape is a flange gasket material made of virgin expanded PTFE. Available in spooled form, it is an ideal gasket material for: glass-lined and plastic flanges; flanges with limited available space; flanges where compressed thickness is important