It’ll know where you are to within 30 centimeters, rather than five meters. At least that’s the claim chip maker Broadcom is making. It says that some of its next-generation smartphone chips will use new global positioning satellite signals to boost accuracy. In a detailed report on the announcement and how the new signals work, IEEE Spectrum says that the new chips, which are expected to appear in some phones as soon as next year, will also use half the power of today’s and even work in cities where tower blocks often interfere with existing systems. All told, it sounds like a massive step change for those who rely on their phones to find their way.