diff --git a/src/backend/edit.go b/src/backend/edit.go
index 5e79680..09e3155 100644
--- a/src/backend/edit.go
+++ b/src/backend/edit.go
@@ -36,7 +36,7 @@ func Rename(oldLocation string, newLocation string) {
 		fmt.Println(AnsiError + "Failed to rename - does the target containing directory exists?" + AnsiReset)
 	}
 
-	// TODO If in online mode, check if oldLocation is a directory and rename it on the server
+	// TODO If in online mode, rename oldLocation to newLocation on the server
 	os.Exit(0)
 }
 
diff --git a/src/sync/client.go b/src/sync/client.go
index 995af1e..5d0f906 100644
--- a/src/sync/client.go
+++ b/src/sync/client.go
@@ -187,7 +187,7 @@ func deletionSync(deletions []string) {
 }
 
 // folderSync creates folders on the client (from the given list of folder names)
-func folderSync(folders []string) { // TODO also add folders on server when they are created from the client
+func folderSync(folders []string) {
 	for _, folder := range folders {
 		// check if folder already exists
 		isFile, isAccessible := backend.TargetIsFile(backend.EntryRoot+folder, false, 1)
diff --git a/src/sync/init.go b/src/sync/init.go
new file mode 100644
index 0000000..49a9bf4
--- /dev/null
+++ b/src/sync/init.go
@@ -0,0 +1,17 @@
+package sync
+
+import (
+	"github.com/rwinkhart/MUTN/src/backend"
+	"math/rand"
+	"os"
+)
+
+// DeviceIDGen generates a new client device ID and registers it with the server
+// device IDs are only needed for online synchronization
+func DeviceIDGen() {
+	deviceIDPrefix, _ := os.Hostname()
+	deviceIDSuffix := backend.StringGen(rand.Intn(48)+48, false, 0) // TODO consider using complex string generator and removing unsafe characters manually
+	deviceID := deviceIDPrefix + "-" + deviceIDSuffix
+	os.Create(backend.ConfigDir + backend.PathSeparator + "devices" + backend.PathSeparator + deviceID) // TODO remove existing device ID file if it exists (from both client and server)
+	GetSSHOutput("libmuttonserver register "+deviceID, false)                                           // register device ID with server
+}