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E*TRADE uses the OAuth 1.0a authorization protocol, which requires a login and password over the browser on the E*TRADE site. The full authorization procedure sequence is shown in the following figure:

etrade autoriazation

A full authorization procedure should be performed only one time a day (the E*TRADE server resets AccessTokens issued earlier at midnight by EST). If the full authorization procedure is already carried out on current day by EST, ETradeTrader automatically downloads AccessToken, stored in a subdirectory of E*TRADE algorithm.