G4S, a multinational security company based in the UK has developed a “high-security” offline storage solution for cryptocurrency and other digital ...
source https://www.google.com/url?rct=j&sa=t&url=https://ethereumworldnews.com/multinational-security-firm-launches-cryptocurrency-custodial-solution/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNE9s2PdFQ5wSw87MWsaxgoHrEXhJQ
