A first request to establish the trusted relationship via the online gaming platform between the first user account and other user accounts of the gaming platform is received. A second request to establish the trusted relationship between the second user account and other user accounts of the gaming platform is received. Whether the first client device corresponding to the first user account is within a defined physical range with respect to the second client device corresponding to the second user account is estimated. Responsive to estimating that the first client device is within the defined physical range with respect to the second client device, the trusted relationship between the first user account and the second user account via the online gaming platform is established and additional functionality that enables the first user account and the second user account to interact via the online gaming platform is enabled.