It's just that this kind of contract has a special form, there is no paper contract document, and because the subject of online shopping contract is uncertain, the real information of the transaction subject can't be judged, which is uncertain, so there is a certain legal risk, so electronic signature is needed at this time.
However, the online shopping platform itself is not an electronic contract signing platform, nor is it qualified to be an electronic signature platform. For example, the online shopping platform itself has no tamper-proof technology and no time stamp. If you want to sign an electronic contract for every transaction on the online shopping platform at the same time, you need to introduce a third-party electronic signature platform into the online shopping platform.
However, due to the relatively small amount of a single transaction on the online shopping platform, if an electronic signature is used, the cost will be higher than the transaction amount. Disputes over sales contracts on online shopping platforms are generally settled through consultation between the two parties. Therefore, at this stage, the online shopping platform has not introduced a third-party electronic signature platform.