Robust Optical Data Encryption by Projection-Photoaligned Polymer-Stabilized-Liquid-Crystals

The emerging Internet of Things (IoTs) invokes increasing security demands that require robust encryption or anti-counterfeiting technologies. Albeit being acknowledged as efficacious solutions in processing elaborate graphical information via multiple degrees of freedom, optical data encryption and anti-counterfeiting techniques are typically inept in delivering satisfactory performance without compromising the desired ease-of-processibility or compatibility, thus leading to the exploration of novel materials and devices that are competent. Here, a robust optical data encryption technique is demonstrated utilizing polymer-stabilized-liquid-crystals (PSLCs) combined with projection photoalignment and photopatterning methods. The PSLCs possess implicit optical patterns encoded via photoalignment, as well as explicit geometries produced via photopatterning. Furthermore, the PSLCs demonstrate improved robustness against harsh chemical environments and thermal stability, and can be directly deployed onto various rigid and flexible substrates. Based on this, it is demonstrated that single PSLC is apt to carry intricate information, or serve as exclusive watermark with both implicit features and explicit geometries. Moreover, a novel, generalized design strategy is developed, for the first time, to encode intricate and exclusive information with enhanced security by spatially programming the photoalignment patterns of a pair of cascade PSLCs, which further illustrates the promising capabilies of PSLCs in optical data encryption and anti-counterfeiting

Analysing the IoT Ecosystem: the Barriers to Commercial Traction

The Internet of Things (IoT) has come to mean all things to all people. Combined with the huge amount of interest and investment into this emerging opportunity, there is a real possibility that the arising confusion will hamper adoption by the mass market. This paper proposes a phased model of the IoT ecosystem development, starting with infrastructure establishment, and culminating in exploitation through the creation of new companies and business models. It does not attempt to quantify the emerging opportunities, relying instead on the many publications dedicated to detailed market analysis. The focus is to place the opportunities in context, demonstrate the importance of sensor system technology underpinning the emerging IoT revolution, and suggests areas where Europe can establish a leadership position. Throughout the paper, examples of the likely protagonists have been used by way of illustration

The IoT Tree of Life

The Internet of Things (IoT) has come to mean all things to all people. Combined with the huge amount of interest and investment into this emerging opportunity, there is a real possibility that the arising confusion will hamper adoption by the mass market. The SILC team have used their extensive Sensor Systems market and technical knowledge in an attempt to clarify the situation for individuals interested in understanding IoT, and the underpinning role of Sensor Systems. This paper proposes a phased model of the IoT ecosystem, starting with infrastructure establishment, and culminating in exploitation through the creation of new companies and business models. It does not attempt to quantify the emerging opportunities, relying instead on the many publications dedicated to detailed market analysis. The focus is to place the opportunities in context, demonstrate the importance of sensor system technology underpinning the emerging IoT revolution, and suggests areas where the UK could establish leadership positions. Throughout the paper, examples of the likely protagonists have been used by way of illustration

What is eHealth?

Non utile per esam

Yes, I know this IoT Device Might Invade my Privacy, but I Love it Anyway! A Study of Saudi Arabian Perceptions

The Internet of Things (IoT) ability to monitor our every move raises many privacy concerns. This paper reports on a study to assess current awareness of privacy implications of IoT devices amongst Saudi Arabians. We found that even when users are aware of the potential for privacy invasion, their need for the convenience these devices afford leads them to discount this potential and to ignore any concerns they might initially have had. We then conclude by making some predictions about the direction the IoT field will take in the next 5-7 years, in terms of privacy invasion, protection and awareness

An evaluation of the workbook for health trainers in prisons and the wider community: based on the Royal Institute of Public Health Level 2 award: understanding health improvement

Health trainers form part of a public policy initiative designed to tackle health inequalities. Health Trainers were first proposed in the White Paper ‘Choosing Health’ (2004) and initially some 1200 NHS accredited Health Trainers were placed in post, providing support in key Primary Care Trust areas with the most challenging health and deprivation indicators. The North West and East Midlands Health Trainer Hubs have developed initiative further within the Prison and National Probation Services with the production of a workbook to support prisoners in their attainment of the award. A team from Sheffield Hallam University were commissioned to conduct a brief consultation exercise to ensure that prison staff delivering the initiative, and prisoners who have completed the training in custody were given the opportunity to contribute to the design and content of the workbook