There are uncertain factors in the identification of the authenticity of star signatures, and no experts can identify them at present, so it is difficult to supervise. If the buyer finds something wrong with the goods, he can report it to Taobao. Once a commodity is reported many times, they will investigate it. The authoritative judicial authentication center has a handwriting authentication department, but it does not accept the business of "authenticating the authenticity of star signatures".

In Europe and America, star signature items are also very popular. In order to prevent sellers from filling in the blanks, European and American sellers usually attach COA(CertificateofAuthority (COA) when selling star signatures. Once COA certificate is found to be forged or received too many complaints, the auction website will blacklist it.

Taobao advocates an honest, positive and fast online trading culture, and insists that "treasure can't be scoured, and trust can't be abandoned." While creating a safer and more efficient online trading platform for Taobao members, Taobao also strives to create and advocate a relaxed and lively family atmosphere of mutual help and love. Everyone who trades on Taobao can not only trade more quickly and efficiently, but also make more friends. Especially in the context of the financial crisis in 2008, the consumption through Taobao has risen against the trend in both quantity and amount.