15476
The second option is to analyze all signals detected within the bands used by the Wi-Fi and Bluetooth technology , offering a higher detection ratio of total visitors ( about 60 % - 70 % ) and extracting behavior patterns that allow the assignment of a unique identifier , each time a device is detected .
 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