Answers.Body: <p>That's a LEGO Dimensions Toy Tag, used  to connect the physical toys to the now discontinued LEGO Dimensions game. See it here: <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=18603c00a#T=C&amp;C=15" rel="noreferrer">https://www.bricklink.com/v2/catalog/catalogitem.page?P=18603c00a#T=C&amp;C=15</a></p>
  
  <p>Yours is the plain kind (no printing on top), which means it was not used for a minifig, but for one of the small builds in a LEGO Dimensions set. Here is a list of all the sets the part you have appeared in: <a href="https://www.bricklink.com/catalogItemIn.asp?P=18603c00a&amp;in=S" rel="noreferrer">https://www.bricklink.com/catalogItemIn.asp?P=18603c00a&amp;in=S</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-08-12T20:10:13.660Z
Answers.LastActivityDate: 2018-08-12T20:10:13.660Z
Answers.UserDisplayName: TheBrickBlogger
Body: <p>My kiddo has recently been given a random parts grab bag, and we’re unable to ID one particular item, of which he has three: anyone know this part?</p>
  
  <p><a href="https://i.sstatic.net/smkpk.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/smkpk.jpg" alt="enter image description here"></a></p>
  
Tags: <piece-information><part-identification>
Title: Mysterious Part ID help, clear blue disk with electronics inside
UserDisplayName: GerardFalla
ThreadText: # Mysterious Part ID help, clear blue disk with electronics inside
  
  (Asked by: username_0 on 2018-08-12)
  
  My kiddo has recently been given a random parts grab bag, and we’re unable to ID one particular item, of which he has three: anyone know this part?
  
  [![enter image description here](https://i.sstatic.net/smkpk.jpg)](https://i.sstatic.net/smkpk.jpg)
  
  **Tags:** piece-information, part-identification
  
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  ## 1 answers
  
  ### Answer by username_1 on 2018-08-12. Score: 7 | Accepted answer
  
  That's a LEGO Dimensions Toy Tag, used to connect the physical toys to the now discontinued LEGO Dimensions game. See it here: <https://www.bricklink.com/v2/catalog/catalogitem.page?P=18603c00a#T=C&C=15>
  
  Yours is the plain kind (no printing on top), which means it was not used for a minifig, but for one of the small builds in a LEGO Dimensions set. Here is a list of all the sets the part you have appeared in: [https://www.bricklink.com/catalogItemIn.asp?P=18603c00a∈=S](https://www.bricklink.com/catalogItemIn.asp?P=18603c00a&in=S)
  
  
  ---
  
  