Under what circumstances may companies require consumers to agree to secret terms?
<p>In some Wifi hotspots, especially by AT&amp;T, new browsers are presented with a login page that requires users to indicate they agree to the terms of use.  The terms are hyperlinked, but clicking on the hyperlink results in an error that the user has not logged in to the network and cannot view the page with the terms until they agree to those terms and log in.  </p>

<p>ISPs require that customers agree to pay an amount which includes "other taxes, fees, and charges which the ISP may change at any time, without notice," before they can find out what the total fees are (and even if they could be told, the ISP apparently could change their "other charges" at any time).  </p>

<p>With DocuSign technology, when there are multiple signatories to a document, those earlier on the list of signatures (nominally as part of a group) are not allowed to see the terms, names, etc. applicable to later signatories; they must agree to those terms blindly.</p>

<p>Is there a general principle that applies to binding contracts in which the person signing the contract must do so without seeing its full terms? Under what conditions is this deemed commercially reasonable and/or legally binding?</p>

<blockquote>
  <p>Is there a general principle that applies to binding contracts in which the person signing the contract must do so without seeing its full terms? Under what conditions is this deemed commercially reasonable and/or legally binding?</p>
</blockquote>

<p>The general legal principle is that the contract is void and unenforceable - a party to a contract <em>must</em> have the opportunity of informing themselves of the terms <em>before</em> they enter it.</p>

united-states contract-law