(1) COMPUTER HARDWARE AND PC AND LAPTOP PRODUCTS AND ACCESSORIES, NAMELY, EXTENSION CABLES; SOFTWARE FOR CONTROLLING MULTIPLE VIDEO CAMERAS, MONITORING VIDEO IMAGES RECEIVED FROM VIDEO CAMERAS, AND FOR NOTIFYING USER WHEN PRESELECTED CONDITION IS DETERMINED ON VIDEO IMAGE AND THE USER HAVING ACCESS TO THE VIDEO IMAGES AND RECEIVING NOTIFICATION OVER A GLOBAL COMPUTER NETWORK; AND (2) AUTOMATIC WIRELESS OPERATING SYSTEM LOCK COMPRISING A RECEIVER CONNECTED TO THE COMPUTER AND A TRANSMITTER CARRIED BY THE USER SO THAT WHEN THE USER MOVES A PREDETERMINED DISTANCE AWAY FROM THE RECEIVER, THE RECEIVER LOCKS THE COMPUTER AND UNLOCKS THE COMPUTER WHEN THE USER RETURNS; WIRELESS PROXIMITY SENSOR, LOCATOR, AND NOTIFICATION SYSTEMS COMPRISED OF ONE OR MORE TRANSMITTERS AND ONE OR MORE RECEIVERS WHICH ARE CARRIED BY THE USER AND OTHER PERSONS, ANIMALS, OR OBJECTS SUCH AS KEYS, MOBILE PHONES,PURSES OR WALLETS FOR NOTIFYING A USER WHEN THE USER AND THE SELECTED ITEM ARE SEPARATED BY MORE THAN OR LESS THAN A SELECTED DISTANCE, OR WHICH ALLOWS THE USER TO OPERATE AN AUDIBLE OR VISUAL SIGNAL FROM THE UNIT ASSOCIATED WITH THE TRACKED ITEM; AND (3) PORTABLE WIRELESS VIDEO MONITORING SYSTEMS COMPRISING A PORTABLE VIDEO CAMERA AND WIRELESS TRANSMITTER AND A PORTABLE WIRELESS MONITOR RECEIVER