Mi Band 4 is the most popular and best-selling smart band of the famous IT company Xiaomi. It provides several information about our physical activity like number of steps or heart rate. This device is linked with our smartphone, which access to its data using Bluetooth LE. Using this mechanism, and with a Raspberry Pi transformed into a smart mirror, we can monitorize this information and present it with graphs and other intuitive forms of displaying its progression through time. All the information can be found in this link: https://arcogroup.bitbucket.io/shapes/integrating_miband_with_smart_mirror/