沈阳是辽宁省的省会，以及中国山东半岛繁荣的中心城市，在当地有着众多的文化活动和社会活动。在沈阳，文书鉴定也是一项重要的服务，如果有人想要办理这项服务，可以前往当地的司法机构进行相关的手续。

首先，沈阳市司法鉴定中心是当地比较完善的司法鉴定机构，他们提供专业的司法鉴定服务，能够办理文书鉴定业务，专业准确、方便快捷。其次，沈阳 also has several forensic experts support centers, including Shenyang Jianping legal Experts Office, Shenyang Dongling Forensic Experts center, and Shenyang Handwriting police identification office, which provide services related to authentication and identification, such as forensic authentication certificates, and so on.

Besides, if residents of Shenyang have the demand of handwriting authentication, they can also consider several forensic identification centers in the local area, such as Shenyang Jinma police Forensic Identification Center, Shenyang Taoxian police Forensic Identification Center, and Shenyang Shahe police Forensic Identification Center. These three police forensic identification centers perform handwriting authentication, materials authentication and others fields of related services.

Nevertheless, Shenyang Taoxian police Forensic Identification Center is the most popular among them, locating in Qipandsi district and the other two in Shenhe and Yuhong districts respectively. What’s more, its contact number is024-88826991.

In summary, for the question “where can people in Shenyang do the legal authentication?”, Shenyang City Forensic Identification Center and several police forensic identification centers are the ideal solutions. They all provide credible authentication as well as efficient service. The contact number of Shenyang Taoxian police Forensic Identification Center can be found above.