With age your baby would learn to recognize family members. As soon as he crosses this stage, his abilities to differentiate strangers and known faces would grow stronger. You can check that whenever a new face catches his sight his response would be quite awkward. Your baby might frown or even cry when a stranger is introduced.
What you need to know
As parents, you need to keep a track of your baby’s expressions when he meets new people. Analyze his body movements, facial expressions as well as sounds which he makes when facing someone who is unknown.