Table 1.

A comparative analysis of proposed work with the existing studies.

Author	Year	Objective	6G	Security	Approach	Pros	Cons
Xu et al. [33]	2019	Smart public safety system.	✗	Blockchain.	BlendMAS.	The scheme offers secure and smart data sharing with access control.	Does not yet explore 6G networks.
Ihinosen et al. [32]	2020	Safety and security in rideshare service.	✗	Using facial recognition API.	GPS tracking and 2-way rating system.	Developed mobile ridesharing scheme enhance the security	Did not consider latency and delay.
Fitwi et al. [34]	2020	Video surveillance systems security.	✗	Blockchain.	Lib-Pri scheme.	The scheme offers real-time video analytics by identifying fugitives using facial features.	Did not consider data confidentiality and scalability.
Makhdoom et al. [35]	2021	To prevent cyberattack incidents.	✗	Blockchain.	Blockchain-enabled collaborative intrusion detection systems.	The scheme enabled node and application authorization.	Does not discuss the scalability of the system.
Wu et al. [36]	2022	On-site safety for tower cranes.	✗	Blockchain.	Smart contract, consensus, and Hyperledger-Fabric-based framework.	The scheme enhanced the safety performance.	Did not consider latency, throughput, and computation overhead analysis.
Yu et al. [37]	2022	Security and privacy of IIoT data.	✗	Blockchain and cryptography.	STCChain.	The scheme prevented data stealing and attacks.	Does not incorporate 6G-based solution.
Na et al. [38]	2022	Crime and accident prevention for autonomous vehicles.	✗	Blockchain.	Multisignature-enabled access control using GPS data.	The scheme offers privacy and security of the image and video data with lower latency.	The scheme limits verifying the reliability of GPS data.
Proposed scheme	2022	Public safety to monitor criminal activity.	✓	Blockchain.	Layered architecture incorporating blockchain and 6G to detect crime.	The scheme uses different ML classifier to identify the attack and nonattack from the criminal activity dataset.	-