How blockchain – the technology behind Bitcoin – could change your life

12/1/2018 - Guardian Circle is a security firm that wants to use blockchain to take emergency services into a new age, sending an instant alert to the people you choose - friends, family, medical professionals or its own security staff. Unlike the 911 system or similar senior alert apps, it will also be able to share … Sigue leyendo How blockchain – the technology behind Bitcoin – could change your life

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