diff --git a/COBS/cobsDecode.py b/COBS/cobsDecode.py
new file mode 100644
index 0000000..e6e4457
--- /dev/null
+++ b/COBS/cobsDecode.py
@@ -0,0 +1,17 @@
+class DecodeError(Exception):
+    pass
+
+def decode(data):
+    data = bytearray.fromhex(data)
+    length = len(data) 
+    index = 0
+    if length <= 0:
+        raise DecodeError("error with input")
+    while index < length - 2:
+        next = data[index]
+        data[index] = 0
+        index += next
+    del data[0]
+    del data[length - 2]
+
+    return bytearray.hex(data)
\ No newline at end of file