General Dynamics attempted to invoke a binding arbitration policy in defense to a claim under the ADA. The court found that sending an e-mail notification of the policy to employees was insufficient, because it is impossible to know whether the employee actually read the communication. The better practice, suggested the court, would be to require employees to acknowledge that they had read the message, by clicking on a link that would provide confirmation. Campbell v. General Dynamics Govt. Systems Corp., 321 F.Supp.2d 142 (D.Mass. 2004).