People trust in net banking and internet and investment  and money transfer is going paperless,The global economy is moving towards digital system so I recommend the modern addition that  is cryptocurrency . It is a digital and decentralized virtual currency that uses cryptography for security it is not issued by any central authority so the government can't take it from us . In cryptocurrency all the transaction is saved in a public ledger so no fraud happens . It is ease to use and low fees the only thing we need is smart phones and an internet .