Technical Support Forum

Hi Zhen,
Your trinket will definitely show in your collection. But...per "Writing.Com 101"  > "Beta: Trinkets" 

"If the Trinket ID number is not hidden in the collected copies, a member with an Upgraded+ membership who collects a trinket and sees the Trinket ID number in the collected Trinket display box, or who knows the Trinket ID number for some other reason, can also display it elsewhere using the trinket tag and the Trinket ID number. The member does not need to have or keep a copy of the Trinket in their collection. If Trinket collection is allowed where they display it, the Trinket can be collected from that location"

You'd need an Upgraded account.

Hope that helps you,
Leger~