[Code of Federal Regulations] [Title 17, Volume 1] [Revised as of April 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 17CFR166.2] [Page 590] TITLE 17--COMMODITY AND SECURITIES EXCHANGES CHAPTER I--COMMODITY FUTURES TRADING COMMISSION PART 166_CUSTOMER PROTECTION RULES--Table of Contents Sec. 166.2 Authorization to trade. No futures commission merchant, introducing broker or any of their associated persons may directly or indirectly effect a transaction in a commodity interest for the account of any customer unless before the transaction the customer, or person designated by the customer to control the account: (a) Specifically authorized the futures commission merchant, introducing broker or any of their associated persons to effect the transaction (a transaction is ``specifically authorized'' if the customer or person designated by the customer to control the account specifies (1) the precise commodity interest to be purchased or sold and (2) the exact amount of the commodity interest to be purchased or sold); or (b) Authorized in writing the futures commission merchant, introducing broker or any of their associated persons to effect transactions in commodity interests for the account without the customer's specific authorization; Provided, however, That if such futures commission merchant, introducing broker or any of their associated persons is also authorized to effect transactions in foreign futures or foreign options without the customer's specific authorization, such authorization must be expressly documented. [48 FR 35304, Aug. 3, 1983, as amended at 52 FR 29003, Aug. 5, 1987]