Tactical motion sensor apparatus and method

A motion sensor apparatus comprising:

• an enclosure comprising a top, a bottom, an inside and an outside;
• an adhesive disposed on said bottom of said enclosure, said adhesive configured to stick fast to a surface through which motion is to be detected such that a user need not continue to hold said motion sensor apparatus against the surface when in use;
• a through-the-wall motion sensor disposed at least partially inside said enclosure, said through-the-wall motion sensor directed out through and away from said bottom of said enclosure;
• and
• an indicator configured to indicate motion of a subject detected by said through-the-wall motion sensor.

A method for an operator on a first side of a wall to detect movement of a subject on an opposite side of the wall comprising:

• attaching a through-the-wall motion sensor module to the first side of the wall by pressing a bottom of the through-the-wall motion sensor module against the first side of the wall such that an adhesive of the through-the-wall motion sensor adheres to the first side of the wall, the adhesive configured to stick fast to a surface through which motion is to be detected such that a user need not continue to hold the motion sensor module against the surface when in use;
• activating the through-the-wall motion sensor module;
• and
• observing indicia of movement provided by an indicator of the through-the-wall motion sensor module.