| Sr.No | Guideline | Silent Observer (SIOB) | Active Tracker | Active Tracker + | 
  
    | 1 | It  should be able to store data* for the period of 2 years, as per the PCPNDT Act. |  |  |  | 
  
    | 2 | Every  data should be stored in compressed, secured, tamper-proof and encrypted form. |  |  |  | 
  
    | 3 | It  should be ensured that stored data be not manipulated or deleted by any mean  and should be protected from tampering. |  |  |  | 
  
    | 4 | It  should start continuous recording/storing of data as soon as Sonography machine  is ON and recording/storing of data should not be controlled through external  equipments (e.g. probe, keyboard etc). |  |  |  | 
  
    | 5 | For  taking backup of the data from tracking device, software application should be  provided by the firm/company to the Appropriate Authority and State PCPNDT  Cell. The software should have simple and easy user-interface for taking backup  and decryption of data. |  |  |  | 
  
    | 6 | It  should be able to send signal and information (e.g. HDD space, No. of videos  created, Time stamp etc) on every On/Off event of Sonography machine (through  SMS/GPRS) which can be monitored or reviewed using online  web-application/software on real-time basis. |  |  |  | 
  
    | 7 | It  should be able to send Alert SMS and Email to the center owner's registered  mobile number/ email on every On/Off event of Sonography machine. |  |  |  | 
  
    | 8 | It  should have external viewable indication (LED or other) for showing its status  (working or non-working). |  |  |  | 
  
    | 9 | The  firm/company should provide the User-id and Password to every center owner to  check the online status of the tracking device. |  |  |  | 
  
    | 10 | There  should not be manual or remote operated On/Off switch button in the device  including SMS/GPRS facility and functioning of device. |  |  |  | 
  
    | 11 | Brief  details like installation date, unique sno., HDD sno., datacard sno. helpdesk  or support desk contact no. & email should be pasted clearly on the top of  the device. |  |  |  | 
  
    | 12 | It should be tightly fitted with Sonography machine in a tamper - proof manner. |  |  |  | 
  
    | 13 | Each tracking device should have UNIQUE serial number. |  |  |  | 
  
    | 14 | If HDD space is full then should be sealed and kept by center owner safely |  |  |  |