public Boolean updatesignatureandmotion(int id, String signature,
			int motionid, int motionlevel) {
		PreparedStatement st = null;
		try{
			st = getPreparedStatement(UpdateSignatureAndMotion);
			st.setInt(1, motionid);
			st.setInt(2, motionlevel);
			st.setString(3, signature);
			st.setInt(4, id);
			st.executeUpdate();
			return true;
		}
		catch(SQLException e){
			e.printStackTrace();
			log.error("Exception: update position error");
			return false;
		}
	}