At present, all users of the SAMOS data distributed on this site are anonymous. In the future, the data center reserves the right to implement a login system for data access. This system will be designed in a manner that will not violate our free and open policy (all users will be allowed to register). The only reason for implementing a login system would be to better track the number and type of data users. This user information will be helpful as we seek funding to support the SAMOS data center.