342544
A " locator card " purportedly containing a " signature " of the object to be detected was inserted into a plastic " card reader " about the size of a tape cassette that could be attached to the user 's belt .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None