SUBSCRIPTION SERVICE AVAILABLE VIA CD ROM

Brand	Owner	Address	Description
MSA PLANSDIRECT	Construction Market Data Group, Inc.	275 Washington Street Newton MA 02458	Subscription service available via CD-ROM and a global computer network featuring specifications and bid preparation information for commercial construction projects;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A GPS information service system for providing supplemental GPS correction and signal acquisition information to subscribers. A GPS information server broadcasts GPS aiding information encrypted with subscription keys. A remote GPS subscription unit receives the key enablers for the subscription keys in service activation (SAM) messages for the services for which they have subscribed and then uses the subscription keys to decrypt the GPS aiding information. In order to prevent unauthorized access to the information, unsymmetrical signature generation and authentication algorithms are used for generating and authenticating signatures for the SAM messages.