Ключевые слова: account, agreement, application, approve, background, bank, block chain, business, certificate, check, checkout, computer, concept, contract, corporate, crypto, currency, data, deal, delivery, device, digital, distance, document, e signature, electronic, finance, financial, icon, interface, internet, key, laptop, mobile, modern, office, online, paper, professional, screen, security, sign, signature, smart, surface, technology, transaction, web, website, work,