Regulations Governing Banks Conducting Financial Products and Services for High-Asset Customers Article 2

Items specified as "provided in writing" in the Regulations may be provided in electronic documents in accordance with regulations in the Electronic Signatures Act. Items specified as “signature” or “sign” in the Regulations may be provided in electronic signature or digital signature in accordance with regulations in the Electronic Signatures Act.
中文原文 銀行辦理高資產客戶適用之金融商品及服務管理辦法第2條
本辦法所稱書面,依電子簽章法之規定,得以電子文件為之。
所稱簽署或簽名者,依電子簽章法之規定,得以電子簽章或數位簽章為之。

English translation for reference only; the Chinese text prevails. Not legal advice.