HELSINKI--(BUSINESS WIRE)--Tieto (HEX:TIE1V)(STO:TIEN) start-ups are joining forces to seek innovative ideas for the future of the retail industry by participating in Ultrahack 2015 – the biggest hackathon in Europe, taking place just before start-up event SLUSH in November in Helsinki, Finland. Tieto is actively looking for innovative, user-friendly and gamified solutions to create better shopping experiences in the future. One way to keep the retail innovations rolling is to take part in Ultr
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