Tech.Luver writes: "'Reuters Technology' reports about singles' mixers with a technological twist. " Before parties, guests register online and complete questionnaires. The answers are then transferred to digital memory devices — red, plastic squares slightly larger than a matchbox — that the guests wear like necklaces. During a party, people point their devices at one another to check how compatible they are. The devices flash red, yellow or green, depending on their level of compatibility. Green means go, and red? Stop. Web matchmaking has one main drawback — lack of personal contact. "There's no interaction anymore," said Duterte. "We're adding the human touch to a high-tech industry.""