Abstract: An apparatus, method and system for detecting and quantizing levels of specific airborne particle contamination in areas to be monitored for a plurality of users 201. Sealed particulate samplers 100 are distributed to a plurality of users 201. Samplers 100 are opened during a test period so that airborne particulate is pulled and affixed to surface 101 by means for attraction and affixing. After the test period, samplers 100 are sealed and sent to a processing center 200 where particulate affixed to surface 101 is analyzed using optical means and reports 203 generated and sent to users 201. Reports 203 compare test results with selected benchmark values from database 204.

Abstract: A method and system for verifying the authenticity documents using an international computer network. Documents are processed by a central repository (100) and verification information supporting their authenticity generated. Paper documents are scanned into electronic image data and uploaded to a server (101) together with verification information where they can be viewed by persons using client computers (301, 302) on an international computer network such as the Internet (400).

Abstract: Downloadable identification labels which are downloaded from a world wide computer network to a remote computer and printed on paper using a printer. Each label is printed with the contact information of a central lost and found registry and attached to one or more personal possessions. The labels can also be printed with an identification code, notification that a reward will be paid for a possession which is returned to the owner, sponsor advertising and a warning that the possession has been indelibly marked with identification indicia such as the internet address of the lost and found registry. The central lost and found registry stores, on a database, information about lost possessions and owner contact information as well as information about found possessions and finder's contact information. If a match is found between a lost possession and found possession the registry communicates the contact information of the finder to the owner so that the possession may be recovered by the owner.