Interlink Electronics Inc. narrowed its net loss for its first quarter when compared to a year ago. The Camarillo-based developer and manufacturer of electronic signature and e-notarization products reported a net loss of $2.1 million, or $0.15 per diluted share, on revenues of $5.8 million for the quarter ending March 31. For the same period in 2007, the company had a net los of $2.5 million, or $0.18 per diluted share, on revenues of $4.2 million. Shares in Interlink closed up at $0.90.