1. A method for cross checking data points obtained with a localization device during a surgical procedure, said method comprising the steps of: palpating at least two points on an object during the surgical procedure using a surgical tool tracked by the localization device; determining the accuracy of one of said at least two palpated points based on said at least two palpated points and corresponding points obtained from a preoperative image of said object; and generating an indicator if said one of said at least two palpated points determined to be inaccurate.