Hong Kong-based Spectra Technologies, the 23rd largest POS terminal manufacturer worldwide, has launched three Android-based devices—the S1, S1 Plus and S1 Self-Service Kit (S1 SSK). All three use similar, phone-type hardware. S1, the base model, is a small handheld device that can be combined with peripherals. S1 Plus is a larger all-in-one handheld device that includes a thermal printer. S1 SSK is a self-service device using the same platform. S1 devices are primarily intended for restaurants, merchants that offer pay-on-delivery services, trade shows and weekend markets. All three run ...