# Sign Bilişim ve Sanayi A.Ş.

> Developer of Sign, where documents are signed in PAdES format with a Turkish ID card or a qualified electronic certificate.

Website: https://sign.wi.tr

Sign Bilişim was set up to move contracts that relied on wet signatures to electronic signing.

In Sign, documents are signed with a Turkish ID card or a qualified electronic certificate. Each signature gets an RFC 3161 timestamp, and documents are archived so they can still be verified years later. It is used in telecom, finance, insurance and HR, among others.

- **E-signature**: Signing with a qualified electronic certificate or Turkish ID card under Law No. 5070.
- **Long-term archive**: With PAdES-B-LTA, signatures can still be verified after the certificate expires.
- **Integration**: REST API, webhooks and automatic delivery to Dropbox, Google Drive, SFTP and similar targets.

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Canonical: https://internetten.com.tr/en/group-companies/sign-bilisim