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|hardware=[[Android (operating system)|Android]] & [[iOS]] smartphones ...ces via a [[Google Play Services]] update, supporting all versions since [[Android Marshmallow]]. ...

...irst3=Qiong |last4=Wong |first4=Duncan S. |title=User-Defined Privacy Grid System for Continuous Location-Based Services |journal=IEEE Transactions on Mobile ...formation is forward to the server, the auxiliary users registered in this system collaborate to hide the precise location of the user. The number of assista ...

...umann]] and [[Morgenstern's thirteen problems|Morgenstern's]] 1944 book "[[Games and Economic Behavior]]" treated preferences as a formal relation whose pro ...e [[Android (operating system)|Android]] operating system. Some years ago, Android struggled to compete with [[Apple Inc.|Apple]] for market share. With the a ...

...s of using a [[peer-to-peer]] network to generate what was described as "a system for electronic transactions without relying on trust".<ref name="Wired:RFB" ...ne's Brood]]'', the universal [[Interstellar travel|interstellar]] payment system is known as "bitcoin" and operates using cryptography.<ref>{{cite book |las ...