Challenge
Simplify and make available in real time, and usable through web service, start and end of employees workshifts.
Solution
The stamping system was implemented at the beginning on 5 points and exploits the cards already held by the employees, with internal microprocessor calypso, generated with sam key.
The device allows employees to "stamp" their presence when they are on the move, as they enter service at different points in the city and not in headquarters.
The cards are with internal microprocessor calypso, generated with sam key.
The microprocessor in the plain side has a unique 8-digit code linked to the user.
The cards are passive and are read with nfc technology.
The reader detects some information and transmits it to a web service. The data are processed and shown with dedicated layouts based on the device from which they are read.
The calls that start from the device are for the transmission of data for one or more stamps (at the event on every stamp, or when the connection is restored to download all the stamps saved locally during the absence of the connection) and timed call to signal " #timer active "to inform the server that the stamp number # is active and connected
Result
Dispositivo con:
- IP55 metal box
- LED indicators for:
- Supply
- Connected to the central server
- Correct card reading
- GPRS module for remote connection
- Internal SD card
- 220VAC power supply
- Extended temperature range -5 ° C, + 60 °