diff --git a/backend/server/server.go b/backend/server/server.go
index 4dd4f30..452d9fc 100644
--- a/backend/server/server.go
+++ b/backend/server/server.go
@@ -100,7 +100,7 @@ func apiEBootstrapHandler(w http.ResponseWriter, r *http.Request) {
 func apiERegisterHandler(w http.ResponseWriter, r *http.Request) {
 	userId := r.URL.Query().Get("user_id")
 	deviceId := r.URL.Query().Get("device_id")
-	GLOBAL_DB.Create(&shared.Device{UserId: userId, DeviceId: deviceId})
+	GLOBAL_DB.Create(&shared.Device{UserId: userId, DeviceId: deviceId, RegistrationIp: r.RemoteAddr, RegistrationDate: time.Now()})
 }
 
 func apiBannerHandler(w http.ResponseWriter, r *http.Request) {
diff --git a/shared/data.go b/shared/data.go
index b5a2bcb..06974d0 100644
--- a/shared/data.go
+++ b/shared/data.go
@@ -17,6 +17,12 @@ type EncHistoryEntry struct {
 type Device struct {
 	UserId   string `json:"user_id"`
 	DeviceId string `json:"device_id"`
+	// The IP address that was used to register the device. Recorded so
+	// that I can count how many people are using hishtory and roughly
+	// from where. If you would like this deleted, please email me at
+	// david@daviddworken.com and I can clear it from your device entries.
+	RegistrationIp   string    `json:"registration_ip"`
+	RegistrationDate time.Time `json:"registration_date"`
 }
 
 const (