Techniques to provide efficient access to virtual conference events are described. Authentication and authorization functionality are provided through use of proof of possession tests, a token service that provides a user device with a token that includes user entitlement data, and high assurance digital certificates. The account card data is read from the magnetic stripe and decoded to enable the swipe card reader to parse the data string. Security of communication is accomplished through use of a public-keyprivate-key encryption system. A lateral epitaxial overgrowth process grows compound semiconductor from the compound semiconductor-coated Si nanowire tips, to form a compound semiconductor layer overlying the insulator.