*Result*: Pure blue wallet (PBW): An effective way of implementing E-wallet.

*The trend towards a cashless society is gaining momentum globally, including in Malaysia. However, despite the popularity of e-wallets, cash remains the preferred payment method for most Malaysians, posing a challenge to achieving this goal. The COVID-19 pandemic has further highlighted the importance of contactless payment methods, but existing e-wallet technologies like NFC and QR codes do not fully comply with social distancing measures and pose cybersecurity risks. To address these issues, the concept of Pure Blue Wallet (PBW) has been proposed. PBW utilizes Bluetooth Low Energy (BLE) technology to facilitate POS transactions, overcoming the limitations of NFC and QR codes and ensuring compatibility with social distancing measures. A pilot study for investigating the strength of Bluetooth Low Energy (BLE) range from different brands of mobile devices at different distances by using the Receiver Signal Strength Indicator (RSSI) measurement in order to know if the range of BLE is consistent from different brands of mobile devices was conducted. The result has revealed significant difference in BLE performance among the tested devices. These findings underscore the critical need for careful selection of mobile devices based on their specific BLE performance characteristics and the intended application distances. By understanding these variations, stakeholders can make informed decisions to ensure reliable and effective use of BLE technology in diverse scenarios. This research emphasizes the importance of rigorous testing and evaluation in the development and deployment of BLE enabled applications. [ABSTRACT FROM AUTHOR]

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