A computer determines whether current location information of the computer indicates that the computer is at a home location. The computer determines a minimum number of characters to be entered by a user into a userID field to cause the computer to automatically display previously entered userIDs based on whether the computer is located at a home location. If fewer than the minimum characters are entered, previously entered userIDs are not displayed. Location information can be based on one or more of: wi-fi signal strengths, cell tower signal strengths and signal arrival timing information, whether the network connection is wireless or Ethernet cable, the wireless protocol, whether a wi-fi connection is secured or public, whether the computer is a mobile device, and satellite navigation system location.