An electronic security system for preventing theft of returned goods, the electronic security system comprising: at least one electronic article surveillance, EAS, gate in an establishment; at least one receiver (11300a-h, 18118) configured to receive transmissions from wirelessly transmitting tags ; and at least one processor configured to: receive , from a mobile communications device associated with a previous purchaser , a notification of intent to return a previously purchased product to the establishment, following receipt of the notification, identify in a data structure , a unique tag ID of a specific wirelessly transmitting tag associated with the previously purchased product, receive location-identifying information and determine, based on the location-identifying information, that the mobile communications device associated with the previous purchaser is located within the establishment, update the data structure to indicate that the previously purchased product was returned to the establishment only if the mobile communications device associated with the previous purchaser is determined to be located within the establishment, and upon updating the data structure, enable an ability to initiate an alarm when the at least one receiver receives a transmission from the specific tag associated with the previously purchased product in proximity to the EAS gate. at least one electronic article surveillance, EAS, gate in an establishment; at least one receiver (11300a-h, 18118) configured to receive transmissions from wirelessly transmitting tags ; and at least one processor configured to: receive , from a mobile communications device associated with a previous purchaser , a notification of intent to return a previously purchased product to the establishment, following receipt of the notification, identify in a data structure , a unique tag ID of a specific wirelessly transmitting tag associated with the previously purchased product, receive location-identifying information and determine, based on the location-identifying information, that the mobile communications device associated with the previous purchaser is located within the establishment, update the data structure to indicate that the previously purchased product was returned to the establishment only if the mobile communications device associated with the previous purchaser is determined to be located within the establishment, and upon updating the data structure, enable an ability to initiate an alarm when the at least one receiver receives a transmission from the specific tag associated with the previously purchased product in proximity to the EAS gate. receive , from a mobile communications device associated with a previous purchaser , a notification of intent to return a previously purchased product to the establishment, following receipt of the notification, identify in a data structure , a unique tag ID of a specific wirelessly transmitting tag associated with the previously purchased product, receive location-identifying information and determine, based on the location-identifying information, that the mobile communications device associated with the previous purchaser is located within the establishment, update the data structure to indicate that the previously purchased product was returned to the establishment only if the mobile communications device associated with the previous purchaser is determined to be located within the establishment, and upon updating the data structure, enable an ability to initiate an alarm when the at least one receiver receives a transmission from the specific tag associated with the previously purchased product in proximity to the EAS gate. <EOS>