If the OP uses IR illumination a freq of 9.4micros is at a peak from the human body. A problem could be caused by so much back reflection from the glass window that the shop inside could be swamped by IR. I would suggest a simple web camera using some basic motion detection software in a PC.
Many people donât know the difference between cardiac arrest and a heart attack or fainting spell. A person in cardiac arrest doesnât breathe, doesnât have a pulse, and canât respond to you. Someone having a heart attack usually is conscious and breathing, has a pulse, and can answer your questions. Respond. Hereâs what you should do if you witness someone go into cardiac arrest: Call 911 right away, or have someone else do it.
1 Nearly 326,000 out-of-hospital sudden cardiac arrests occur annually, and 88 percent of cardiac arrests occur at home. 2  Many victims appear healthy with no known heart disease or other risk factors. 3  Sudden cardiac arrest is not the same as a heart attack.