Conclusions
Requirements
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The product should be mounted on the bicycle
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The product should be able to get off for charging
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The product should be able to stay on the bicycle without being stolen
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The product should be easy to use
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The buttons (if any) should be easy to feel, they should be tactile
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The buttons (If any) should have a bright colour
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The product should not interfere with the hearing of the user
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The product should not interfere with the sight of the user
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The product could have personalized functions
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The product should make the place of the road more clear
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The product should make the contrast higher by shining a bright light on the ground
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The product should not blind other with a bright light
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The product should support the user with defining the sides of the roads
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The product should communicate the user by using vibration
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The product should be able to be learned without a manual
Thinking aloud