Avoiding Duplicate and Unintentional Clocking

Employees sometimes accidentally clock in or out multiple times, resulting in duplicate clocking events (aka duplicate punches) being recorded. If this happens, manual adjustments will be needed to be made to timesheets to correct their hours worked.

NoahFace provides a number of configuration settings, described below, that can help you avoid this situation.

Duplicate Clocking Prevention

The NoahFace App can be configured to automatically detect and prevent duplicate clocking:

To enable duplicate clocking prevention within a given time period (in seconds), just specify the "dupsecs" setting in the Screen Details of your Access Point Type. You can also optionally change the default warning message by specifying the "dupmsg" setting:

Duplicate clocking prevention is always enabled for "No Touch" clocking, with the time period defaulting to the Screen Timeout if it is not otherwise specified:

Avoiding Unintentional Identification

By default, the NoahFace App constantly monitors for faces and automatically activates when a face is detected. This is appropriate in 95% of Time and Attendance installations, however, if your iPad is mounted in a high traffic area, you may find that employees look at the iPad camera when they are passing by, resulting in them being identified unintentionally. If you are using "No Touch" clocking, this can even result in unintentional / duplicate clocking events being recorded.

There are two settings in the NoahFace App under Settings / Facial Recognition that influence this behaviour. The No Touch Detection switch, which is on by default, enables automatic face detection. If you turn this switch off as below, then employees need to touch the screen to activate face detection:

The Detection Distance, which is set to "Near" by default, indicates how close to the iPad an employee needs to stand for their face to be detected. If you set this to "Very Near" or "Minimum", employees will need to stand progressively closer to the iPad in order to be identified:

The Detection Distance setting can be adjusted either with or without No Touch Detection being enabled.

Increasing the Recognition Delay

The NoahFace App is designed to support large numbers of employees clocking in and out as quickly as possible - as fast as one employee every five seconds.

Once an employee has been identified and has recorded their clocking event (which can happen in less than a second if "No Touch" clocking is used), the NoahFace App displays an animated green tick:

This feedback serves two purposes: firstly it provides positive reassurance to the employee that their clocking event has been captured, and secondly, it provides them time to start to move away from the iPad so that the next employee can approach.

The NoahFace App displays the animated green tick for four seconds, and then delays a further one second before it starts looking for new faces. This total of five seconds is usually sufficient for employees to move away. However, if you are seeing employees lingering in front of the iPad for too long, triggering duplicate clocking events, you can increase the one second recognition delay. This is done by configuring the "ignore" time (in seconds) in your Access Point Type as follows:

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