There are also other ways to communicate when 'others' are around. I have found text messages to be a wonderfully subversive way of reminding someone that they are under control. They are at work, their personal phone (cos I wouldn't condone using a work mobile for this) message alert goes off, they read a message that says 'you are my slave and I love you' or even 'tonight I want you to have your ankle and wrist cuffs on by the time I get home' and that gives that wonderful frission of anticipation and a sense that their Master is ever present but no one knows about it - the message can be deleted.

You can do the same with e-mail. You can also do thiings like leave notes in thier handbag with instructions and command them to wear things under thier normal clothes where no one else can see them but they are aware of them. Basically, it is a case of deciding how far you can push it without being caught...

Another thing I would recommend is setting aside time to be alone with each other. Getting the kids out of the house (or getting out of the house yourself and leaving a babysitter in charge) and spending a few hours a week just being Master and slave. If you can, it is also worth setting aside one room to be your 'kink room'. Basements are good for this but any spare room will do. Put a good lock on it and use that for your play activities and storing any equipment.