## 3 Results and Discussion
### Message Content and Trust  
Question 7 explored the interviewees' views of how smartphone technology could help them make a decision during evacuation. As soon as the fire has been detected, interviewees explained that they would start gathering information. Smartphones would allow occupants to identify the most suitable egress route and update their route in real time as information is received about the badly changing fire situation. Six interviewees stated that smartphones would allow them to change their decision as they will trust the evacuation system. Part of the decision making would be based on information such as power cuts and lighting. It was repeatedly stated that the information gathered needs to be accurate and needs to give precise instructions. The decision-making process as expressed by nine interviewees was to investigate the fire, gather belongings, and start evacuating based on information received. The decision process will also depend on instructions that occupants will need to follow. One interviewee explained that to rely on a system or a smartphone while making a decision during evacuation, the system would need to provide relevant and reliable information continuously from the fire detection stage until successful evacuation of the building. The main factor interviewees identified that would aid them in making the correct decision using their smartphones is to trust the system that is sending the information. One interviewee stated that they would evacuate the building through the nearest exit. However, the instructions sent to occupants by their smartphone could allow occupants to make a different decision. For example, occupants may be instructed to stay in their apartments, use lifts, or use different egress routes than originally planned. Based on interviewees' answers, it is clear that the occupants first need to trust the system before they could follow instructions. The quality of information received by occupants and the speed at which they receive that information would allow a faster evacuation process. All interviewees agreed that their smartphone would enable them to make better evacuation decisions as it would convey more reliable information. Question 8 investigated interviewees' opinions about what an emergency message should contain when sent to them during an emergency. Interviewees clearly explained that the location of the fire was the most important factor they wanted to be included in the message, once the fire has been detected and confirmed. One interviewee stated, \"the nature of the situation needs to be known\". Eleven interviewees explained that the message should only be sent if the fire has been confirmed. The second most important factor was to know what is the safest and shortest escape route to take, based on their location. Although the safest route and shortest route to take might not be the closest to the occupant's location, interviewees explained that their trust in the egress system will motivate them to follow instructions. In addition, the interviewees stated that they wanted to know whether they could use the lift. Four interviewees stated that the message should confirm whether they should stay in the apartment and wait for help or evacuate immediately. Interviewees wanted to know whether they should be evacuating via the ground floor, heading towards the top floors, or staying away from the fire and waiting for help to arrive. A number to call in case occupants were stuck was also stated by interviewees, as they explained it should be included at the end of the text message. The text message should contain what assembly point occupants should meet at. Two interviewees mentioned that the message needs to be short but needs to contain enough information to allow them to evacuate safely. One interviewee also stated that they wanted confirmation whether their family members within the building have already evacuated.