diff --git a/src/bytes.jl b/src/bytes.jl
index e4d3baa..95073aa 100644
--- a/src/bytes.jl
+++ b/src/bytes.jl
@@ -1,3 +1,6 @@
+module bytes
+
+export byte_vec_to_int, byte_vec_to_string, bit_at
 
 """
     read_data_size(size::Vector{UInt8})::Real
@@ -23,4 +26,14 @@ function byte_vec_to_string(byte_vec::Vector{UInt8})::AbstractString
     String(Char.(byte_vec))
 end
 
+"""
+    bit_at(byte::UInt8, idx::Int64; t::Type=Int64)::Int64
+
+Parse the bit at specific index in byte
+"""
+function bit_at(byte::UInt8, idx::Int64; t::Type=Int64)::Int64
+    parse(t, bitstring(byte)[idx])
+end
+
+end
 # byte_vec_to_string(UInt8.(collect("ABC")))
\ No newline at end of file