hi , i have a unit MC3190-Z Unit. i using Motorola EMDK for .NET V. 2.6 I need to build and RFID application , which Read TID and User Data at the same time. and Write the User Memory to RFID Tag  by the TID Need help on a few question as below : 1. from the SDK i found out the reader read the memory data each time from our selection on  TID, User or EPC . Can i read TID and User Memory at the same time? means each trigger i get TID and User memory. 2. The RFID Tag manufacturer have supply me same EPC ID  when deliver to me.    i need to write into user memory section . m_ReaderAPI.Actions.TagAccess.WriteWait(TagID,  Me.m_WriteForm.m_WriteParams, Me.m_AntennaInfoForm.getInfo) SDK WriteWait function TagID is refer to EPC ID OR TID ? if i place two RFID Tag at the same place. and i have the same EPC ID , when i write the user memory, does MC 3190-Z will write the same information into two tag ?