Cisco is high-tech company, yet uses really simple techniques to prototype end-user experiences. By simple, they mean string, Blu-tac, pins etc. The example of drawing out what the 'new-hire' experince should be like is very revealing innovative (see 9mins 47secs to 11:00mins)
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Cisco Building the Next Generation Company: Innovation, Talent, Excellence
MIT seminar - Cisco President, John Chambers' presentation on the future of successful businesses"