Visually challenged people (VCPs) face many difficulties in their routine life.Usually, in many cases, they need to depend upon others, which makes them unconfident in an unfamiliar environment.Thus, in this paper, we present an aid that helps in detecting obstacles and water puddles in their way.This system comprises a walking stick and Android-ba
In the first half of the Qajar period, and especially after the wars between Iran and Russia, attention was paid to Iran in the works of the writers and poets of that period, and some reflections on the aspects of the distinction of "self" from the "other" were taken.This distinction and The recognition of the definition beetroot birkenstock of the
Hash chain based password systems are a useful way to guarantee authentication with one-time passwords.The core idea dates back to Lamport, and is specified in RFC 1760 as S/Key.At CCS 2017, Kogan et al.introduced T/Key, an improved password system where one-time passwords are only valid for a limited time period.They proved security of their const