The simple electronic signature does not represent any security-relevant added value for companies and is subject to the free judicial evaluation of evidence (§ 286 ZPO). The advanced electronic signature is also subject to the free judicial assessment of evidence (§ 286 ZPO) and ensures the integrity of the document by means of a certificate. Only the qualified electronic signature (QeS) replaces the statutory written form (126, 126a BGB) and is therefore equivalent to the handwritten signature.