## 3 Results
### Limitations and Challenges  
Using digitally focused approaches in managing cancer patients has significantly enhanced patient care. However, substantial technical and conceptual challenges must be addressed to fully optimise the potential of these technologies. The intricate nature of data produced by these innovative technologies, such as wearable devices, smartphone applications, and telemedicine platforms, poses considerable difficulties in its interpretation. The data sources frequently generate substantial amounts of unstructured and diverse information, encompassing physiological measurements, behavioural data, and self-reported patient results. The difficulty resides not only in the large quantity but also in the data's diversity and consistency. Ensuring precise data interpretation relies on the capacity to standardise measurements across various devices and platforms. Now, there is a dearth of widely acknowledged criteria for data gathering in digital health, resulting in discrepancies in the interpretation and application of data in clinical practice. Physiological measurements such as heart rate or oxygen saturation might exhibit considerable variation in accuracy across different devices, resulting in possible misinterpretation of a patient's health [46; 47; 48]. Another notable constraint is the excessive dependence on self-reported data, which is susceptible to subjectivity and imprecision. Suboptimal reporting of symptoms by patients or misinterpretation of their own health data might result in inconsistencies in the information given to healthcare professionals. Furthermore, existing digital health techniques typically lack the capacity to adjust to individual patients' specific requirements and preferences, leading to a standardised approach that may not be appropriate for all patients [49; 50]. Both the design and functionality of numerous digital health devices pose significant challenges. A significant number of wearable gadgets, for instance, lack the explicit consideration of the unique requirements of cancer patients. These patients may encounter physical constraints, such as decreased movement or skin sensitivity, making using specific devices uncomfortable or unfeasible. Battery longevity and data storage capacity are additional technical constraints that can restrict the efficiency of these devices. Requiring frequent recharging or data synchronisation might be burdensome for patients, especially those who are advanced in age or suffering from substantial weariness caused by disease. Furthermore, the robustness of these devices is a consideration, particularly for patients receiving intensive therapies that may need frequent hospitalisations or physical strain [51]. Furthermore, the security of the gathered data is a significant worry and a big possible constraint. Protected health information is highly sensitive, and any violation of confidentiality can result in serious repercussions for patients. An essential obstacle is guaranteeing the encryption and secure storage of data, both during its transmission and when it is not in use. Strong security measures are necessary to deter unwanted access to or manipulation of the data effectively. Nevertheless, engineering such security protocols can be intricate and expensive, especially for smaller healthcare providers or settings with limited resources [52]. Commercialising microneedles encounters many substantial obstacles, mostly stemming from technological, regulatory, and market-related impediments. Production of microneedles on a large scale while ensuring accuracy and quality is technically challenging, necessitating sophisticated and expensive manufacturing methodology. The regulatory authorisation procedures for microneedles are intricate due to their status as a recently developed technology, which necessitates thorough testing to guarantee both safety and effectiveness, especially considering their intrusive profile.