Open Access

GPS-enabled smart stick guide for campus accessibility at King Abdulaziz University

,  and   
Aug 26, 2025

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Figure 1:

Flowchart of smart stick system.
Flowchart of smart stick system.

Figure 2:

Smart Guide system architecture.
Smart Guide system architecture.

Figure 3:

Hardware block diagram.
Hardware block diagram.

Figure 4:

The smart stick.
The smart stick.

Integration test

Test ID Test case objective Test case description Expected result Remark
01 Test the transition from the sign-up screen to the desired user screen based on the user type field. The user enters the required inputs for registration, including determining the user type. Transition to the proper home screen for the chosen user type. Positive result
02 Test the transition from the sign-in screen to the proper user home screen based on the data retrieved from the database. The user enters the required inputs for signing in. The application retrieves the user type from the database and transitions the user to their home screen. Positive result
03 Test the connection of the student–guardian accounts. The student enters the email of their guardian in the My Account tab. The application shows a notification in the guardian account. Positive result
04 Test the emergency alarm sent to the guardian to check the student’s location. The student tabs the emergency button on their main screen. The application sends an alarm to the guardian to check the student’s location. Positive result
05 Test the integration of Unity-Xcode applications. The student tabs the building button on their main screen. The application shows the first interface from the Unity build, which asks for the floor. Positive result

Hardware components

Component description Component image
1 The Arduino board is a microcontroller connected to the application and the other components.
2 An ultrasonic sensor is utilized to sense the barrier in a specified range.
3 The light sensor is used to measure the intensity of light in a place.
4 A buzzer is used to give a sound during emergencies and when detecting an obstacle.
5 The push button is used as an emergency button.
6 LED light is used to turn it on in dark places.
7 The vibration motor gives vibrations to alert the blind student.
8 GPS module is utilized to detect the location of the visually impaired student.

Unit test

Test case ID Test case description Input data Expected result Actual result Pass/fail
A01 Scanning a barrier at a 20 cm distance Since a barrier at a 20 cm distance Turning on buzzer and vibrator The buzzer and vibrator turned on Pass
A02 Sensing a dark place Analog value <50 Turning on the buzzer and LED light The buzzer and LED light turned on Pass
X02 The user enters an invalid email for registration

First name = “Shahed”

Last name = “Safar”

E-mail = s12@gmail.com

Password = s1234567

User type = Talab

Sign up fails Failed to sign up Pass
X05 The user enters the incorrect email for logging in

E-mail = r123@stu.kau.edu

Password = 1234567r

Sign in fails Failed sign in Pass
X09 The user updates the password with incorrect inputs

Password = r1234567

Confirmed password = r123456

Update the password fails Failed updating Pass
U01 Getting directions for a destination Destination name Arrows pointing to the destination Correct arrows pointing to the destination Pass
U02 Getting accurate voice instructions to reach the destination Destination name Accurate and immediate voice instruction Latency in voice instruction Pass
U03 Recognizing Arabic words accurately Saying the class number: “Hall” 128 Recognize the words correctly Recognized the words correctly Pass
Language:
English
Publication timeframe:
1 times per year
Journal Subjects:
Engineering, Introductions and Overviews, Engineering, other