open to choice

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But it leaves the precise route open to choice and the phone simply vibrates when it is pointing towards the target destination.
Simon Robinson at Swansea University, UK, and colleagues, have developed a new app that gives the user feedback on the general direction to take to reach a geographical target, but leaves the precise route open to choice.
In the areas open to choice, customers have the opportunity to comparison-shop among multiple providers and they are saving an average of 5% to 15% off their utility bills.