Entries received shall be deemed to be submitted by the authorized account holder of the Windows Central account associated with the entry. (windowscentral.com)
For purposes of these Official Rules «authorized account holder» is defined as the natural person who is assigned to a Windows Central account by Windows Central. (windowscentral.com)
Each potential winner may be required to provide Sponsor with proof he / she is the authorized account holder of the Windows Central account associated with a winning entry. (windowscentral.com)