The goal of this paper is to provide an overview and nimble on the concept and subject of Human-Computer Interaction (HCI). The outline includes the basic definition and terminology, various applications and survey of existing technologies and recent advances in the field like how to do visualization of data for knowledge discovery, brain computer interface, etc and what will be the scenario after 20 years from date and to show how Information and communication technologies have proven to be an effective way of helping geriatric persons improve independence outcomes, but such technologies are yet not widely used by this segment of the population due to many reasons the main aim behind to write this paper is to put a light on use of mobile phones among geriatric people and to bridge the gap between interaction with device by doing some survey on existing interface. The geriatric person show some resistance in adopting the technology, making them deprived of the benefits it has to offer. This problem is gaining more importance, since due to our healthy lifestyles we live longer, and are likely to be physical, socially and cognitively active until older ages.