Most of the leading software developer companies who deals in developing ERP, CRM & Accounting Software’s are struggling to sign Tax Invoices, Vouchers & Audit Reports Digitally. Here comes signsecure with the powerful solutions which can fulfill all requirement of Signing & Authenticating PDF Documents. Solution No 1 :- Digital Signature API / E Sign API :- This solution is completely automated & no human intervention need to sign PDF Documents after one-time integration.